CDTG / CDT Environmental Technology Investment Holdings Limited - Depositi SEC, Relazione annuale, dichiarazione di delega

Certification of Chief Financial Officer Pursuant to Section 302 of the Sarbanes-Oxley Act of 2002

Exhibit 12.2 Certification of Chief Financial Officer Pursuant to Section 302 of the Sarbanes-Oxley Act of 2002 I, Tiefeng Wang, certify that: 1. I have reviewed this Annual Report on Form 20-F/A of CDT Environmental Technology Investment Holdings Limited (the “Company”); 2. Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 20-F/A (Amendment No. 1)

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 20-F/A (Amendment No. 1) (Mark One) ☐ REGISTRATION STATEMENT PURSUANT TO SECTION 12(b) OR 12(g) OF THE SECURITIES EXCHANGE ACT OF 1934 OR ☒ ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the fiscal year ended December 31, 2024 OR ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d)

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of September, 2025 Commission File Number 001-

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of September, 2025 Commission File Number 001-42007 CDT Environmental Technology Investment Holdings Limited (Translation of registrant’s name into English) C1, 4th Floor, Building 1, Financial Ba

CDT Environmental Technology Investment Holdings Limited (A company incorporated in the Cayman Islands with registered number 317416) Notice of Extraordinary General Meeting to be held on 23 September 2025

EXHIBIT 99.1 CDT Environmental Technology Investment Holdings Limited 城道通環保科技投資控股有限公司 (A company incorporated in the Cayman Islands with registered number 317416) Notice of Extraordinary General Meeting to be held on 23 September 2025 NOTICE IS HEREBY GIVEN that the extraordinary general meeting (the Meeting) of CDT Environmental Technology Investment Holdings Limited 城道通環保科技投資控股有限公司, a Cayman Isl

Please Vote, Sign, Date and Return Promptly in the Enclosed Envelope. Extraordinary General Meeting of Shareholders Proxy Card - CDT Environmental Technology Investment Holdings Limited DETACH PROXY CARD HERE TO VOTE BY MAIL THE BOARD OF DIRECTORS RE

EXHIBIT 99.3 VOTE ON INTERNET Go to http://www.vstocktransfer.com/proxy Click on Proxy Voter Login and log-on using the below control number. Voting will be open until 11:59 p.m. Eastern Time September 21, 2025. CONTROL # VOTE BY EMAIL Mark, sign and date your proxy card and return it to [email protected] * SPECIMEN * VOTE BY MAIL 1 MAIN STREET ANYWHERE PA 99999-9999 Mark, sign and date your

Certification of Chief Executive Officer Pursuant to Section 906 of the Sarbanes-Oxley Act of 2002

Exhibit 13.1 Certification of Chief Executive Officer Pursuant to Section 906 of the Sarbanes-Oxley Act of 2002 Pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002, the undersigned officer of CDT Environmental Technology Investment Holdings Limited (the “Company”) hereby certifies, to such officer’s knowledge, that: 1. The accompanying annual re

Certification of Chief Financial Officer Pursuant to Section 906 of the Sarbanes-Oxley Act of 2002

Exhibit 13.2 Certification of Chief Financial Officer Pursuant to Section 906 of the Sarbanes-Oxley Act of 2002 Pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002, the undersigned officer of CDT Environmental Technology Investment Holdings Limited (the “Company”) hereby certifies, to such officer’s knowledge, that: 1. The accompanying annual re

CDT Environmental Technology Investment Holdings Limited C1, 4th Floor, Building 1, Financial Base, No. 8 Kefa Road, Nanshan District, Shenzhen, People’s Republic of China INFORMATION SHEET

EXHIBIT 99.2 CDT Environmental Technology Investment Holdings Limited C1, 4th Floor, Building 1, Financial Base, No. 8 Kefa Road, Nanshan District, Shenzhen, People’s Republic of China INFORMATION SHEET General This Information Sheet is furnished in connection with the Extraordinary General Meeting (the “EGM”) of CDT Environmental Technology Investment Holdings Limited (the “Company”) to be held o

Certification of Chief Executive Officer Pursuant to Section 302 of the Sarbanes-Oxley Act of 2002

Exhibit 12.1 Certification of Chief Executive Officer Pursuant to Section 302 of the Sarbanes-Oxley Act of 2002 I, Yunwu Li, certify that: 1. I have reviewed this Annual Report on Form 20-F/A of CDT Environmental Technology Investment Holdings Limited (the “Company”); 2. Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact nec

Shenzhen House Lease Agreement Prepared by: Shenzhen Housing and Construction Bureau November 2019

EXHIBIT 4.7 Shenzhen House Lease Agreement (Non-Residential) Prepared by: Shenzhen Housing and Construction Bureau November 2019 Instructions 1. This contract is a model text. Both parties may adjust the content within the scope of relevant laws and regulations based on actual circumstances when signing. 2. Before signing the contract, the lessor and lessee must provide the following materials: o

The accompanying notes are an integral part of these consolidated financial statements.

EXHIBIT 99.1 CDT Environmental Technology Files Annual Report on Form 20-F Revenue of $29.8 million and net income of $1.4 million impacted by reduced project activity due to a slowdown in the PRC economy SHENZHEN, China, May 15, 2025 (GLOBE NEWSWIRE) - CDT Environmental Technology Investment Holdings Limited (NASDAQ:CDTG) (“CDT”, the “Company”, or “we”), a leading provider of waste treatment syst

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 20-F

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 20-F (Mark One) ☐ REGISTRATION STATEMENT PURSUANT TO SECTION 12(b) OR 12(g) OF THE SECURITIES EXCHANGE ACT OF 1934 OR ☒ ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the fiscal year ended December 31, 2024 OR ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES E

CDT Environmental Technology Investments Holdings Limited Insider Trading Policy

EXHIBIT 11.2 CDT Environmental Technology Investments Holdings Limited Insider Trading Policy Purpose This Insider Trading Policy (the “Policy”) provides guidelines with respect to transactions in the securities of CDT Environmental Technology Investment Holdings Limited (the “Company”) and the handling of confidential information about the Company, and the companies with which the Company does bu

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of May, 2025 Commission File Number 001-42007

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of May, 2025 Commission File Number 001-42007 CDT Environmental Technology Investment Holdings Limited (Translation of registrant’s name into English) C1, 4th Floor, Building 1, Financial Base, No

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, DC 20549 FORM 12b-25 NOTIFICATION OF LATE FILING

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, DC 20549 FORM 12b-25 NOTIFICATION OF LATE FILING (Check one): ☐ Form 10-K ☒ Form 20-F ☐ Form 11-K ☐ Form 10-Q ☐ Form 10-D ☐ Form N-CEN ☐ Form N-CSR For Period Ended: December 31, 2024 ☐ Transition Report on Form 10-K ☐ Transition Report on Form 20-F ☐ Transition Report on Form 11-K ☐ Transition Report on Form 10-Q For the Transition Period Ended: Read Instruction (on back page) Before Preparing Form.

CDT Environmental Technology Investment Holdings Limited 2025 EQUITY INCENTIVE PLAN ARTICLE I PURPOSE

EXHIBIT 99.1 CDT Environmental Technology Investment Holdings Limited 2025 EQUITY INCENTIVE PLAN ARTICLE I PURPOSE The purpose of this CDT Environmental Technology Investment Holdings Limited 2025 Equity Incentive Plan (the “Plan”) is to benefit CDT Environmental Technology Investment Holdings Limited., an exempted company incorporated in the Cayman Islands (the “Company”) and its shareholders, by

Calculation of Filing Fee Tables (Form Type) CDT Environmental Technology Investment Holdings Limited (Exact Name of Registrant as Specified in its Charter) Table 1: Newly Registered and Carry Forward Securities

Exhibit 107 Calculation of Filing Fee Tables S-8 (Form Type) CDT Environmental Technology Investment Holdings Limited (Exact Name of Registrant as Specified in its Charter) Table 1: Newly Registered and Carry Forward Securities Security Type Security Class Title Fee Calculation or Carry Forward Rule Amount Registered Proposed Maximum Offering Price Per Unit Maximum Aggregate Offering Price(1)) Fee Rate Amount of Registration Fee(2) Carry Forward Form Type Carry Forward File Number Carry Forward Initial effective date Filing Fee Previously Paid In Connection with Unsold Securities to be Carried Forward Newly Registered Securities Fees to Be Paid Equity Ordinary Shares, par value $0.

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM S-8 REGISTRATION STATEMENT UNDER THE SECURITIES ACT OF 1933 CDT Environmental Technology Investment Holdings Limited (Exact Name of Registrant as Specified in Its Charter)

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM S-8 REGISTRATION STATEMENT UNDER THE SECURITIES ACT OF 1933 CDT Environmental Technology Investment Holdings Limited (Exact Name of Registrant as Specified in Its Charter) Cayman Islands Not Applicable (State or Other Jurisdiction of Incorporation or Organization) (I.R.S. Employer Identification No.) C1, 4th Floor, Buildi

CDT Environmental Technology Reports 2024 Unaudited Interim Financial Results and Provides Business Updates

EXHIBIT 99.1 CDT Environmental Technology Reports 2024 Unaudited Interim Financial Results and Provides Business Updates Revenue of $12.7 million and earnings per share of $0.14 impacted by reduced project activity due to a slowdown in the PRC economy SHENZHEN, China, December 27, 2024 (GLOBE NEWSWIRE) - CDT Environmental Technology Investment Holdings Limited (NASDAQ: CDTG) (“CDT”, the “Company”,

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of December, 2024 Commission File Number 001-4

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of December, 2024 Commission File Number 001-42007 CDT Environmental Technology Investment Holdings Limited (Translation of registrant’s name into English) C1, 4th Floor, Building 1, Financial Bas

CDTG / CDT Environmental Technology Investment Holdings Limited / LUOJIA HOLDINGS LTD - FORM SC 13G Passive Investment

SC 13G 1 e6126sc13g.htm FORM SC 13G SECURITIES AND EXCHANGE COMMISSION WASHINGTON, DC 20549 SCHEDULE 13G Under the Securities Exchange Act of 1934 (Amendment No.N/A)* CDT Environmental Technology Investment Holdings Limited (Name of Issuer) Ordinary shares, par value $0.0025 per share (Title of Class of Securities) G2030P107 (CUSIP Number) April 22, 2024 (Date of Event Which Requires Filing of thi

CDTG / CDT Environmental Technology Investment Holdings Limited / Venture Million Ltd - FORM SC 13G Passive Investment

SC 13G 1 e6127sc13g.htm FORM SC 13G SECURITIES AND EXCHANGE COMMISSION WASHINGTON, DC 20549 SCHEDULE 13G Under the Securities Exchange Act of 1934 (Amendment No.N/A)* CDT Environmental Technology Investment Holdings Limited (Name of Issuer) Ordinary shares, par value $0.0025 per share (Title of Class of Securities) G2030P107 (CUSIP Number) April 22, 2024 (Date of Event Which Requires Filing of thi

CDTG / CDT Environmental Technology Investment Holdings Limited / CDT ENVIRONMENTAL TECHNOLOGY HOLDINGS LTD - FORM SC 13G Passive Investment

SC 13G 1 e6128sc13g.htm FORM SC 13G SECURITIES AND EXCHANGE COMMISSION WASHINGTON, DC 20549 SCHEDULE 13G Under the Securities Exchange Act of 1934 (Amendment No.N/A)* CDT Environmental Technology Investment Holdings Limited (Name of Issuer) Ordinary shares, par value $0.0025 per share (Title of Class of Securities) G2030P107 (CUSIP Number) April 22, 2024 (Date of Event Which Requires Filing of thi

CDT Environmental Technology Investment Holdings Limited Files Annual Report on Form 20-F Reports Second Consecutive Year of Revenue Growth and Profitability

EXHIBIT 99.3 CDT Environmental Technology Investment Holdings Limited Files Annual Report on Form 20-F Reports Second Consecutive Year of Revenue Growth and Profitability Shenzhen, China, May 15, 2024 (GLOBE NEWSWIRE) – CDT Environmental Technology Investment Holdings Limited (NASDAQ: CDTG) (“CDT”), a leading provider of waste treatment systems and services throughout China, today announces that i

CDT Environmental Technology Investment Holdings Limited Receives Three New Utility Model Patent Allowances from the China National Intellectual Property Administration (CNIPA) Newly granted intellectual property supports the Company’s waste manageme

EXHIBIT 99.2 CDT Environmental Technology Investment Holdings Limited Receives Three New Utility Model Patent Allowances from the China National Intellectual Property Administration (CNIPA) Newly granted intellectual property supports the Company’s waste management platform featuring new AI-powered intelligent waste-sorting technologies Shenzhen, China, May 02, 2024 (GLOBE NEWSWIRE) – CDT Environm

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of May, 2024 Commission File Number 001-42007

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of May, 2024 Commission File Number 001-42007 CDT Environmental Technology Investment Holdings Limited (Translation of registrant’s name into English) C1, 4th Floor, Building 1, Financial Base, No

CDT Environmental Technology Investment Holdings Limited Announces New Wastewater Treatment Services Contract Valued at Approximately $11.7 Million Leading Chinese engineering and construction firm selected as implementation partner

EXHIBIT 99.1 CDT Environmental Technology Investment Holdings Limited Announces New Wastewater Treatment Services Contract Valued at Approximately $11.7 Million Leading Chinese engineering and construction firm selected as implementation partner Shenzhen, China, April 24, 2024 (GLOBE NEWSWIRE) – CDT Environmental Technology Investment Holdings Limited (NASDAQ: CDTG) (“CDT”), a leading provider of

CERTIFICATION BY THE PRINCIPAL FINANCIAL OFFICER PURSUANT TO SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002

Exhibit 13.2 CERTIFICATION BY THE PRINCIPAL FINANCIAL OFFICER PURSUANT TO SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002 In connection with the annual report of CDT Environmental Technology Investment Holdings Limited (the “Company”) on Form 20-F for the year ended December 31, 2023 as filed with the Securities and Exchange Commission on the date hereof (the “Report”), I, Tiefeng Wang, Chief Financ

CDT ENVIRONMENTAL TECHNOLOGY INVESTMENT HOLDINGS LIMITED Incentive-BASED Compensation Recovery Policy

EXHIBIT 97.1 CDT ENVIRONMENTAL TECHNOLOGY INVESTMENT HOLDINGS LIMITED Incentive-BASED Compensation Recovery Policy 1. Policy Purpose. The purpose of this CDT Environmental Technology Investment Holdings Limited (the “Company”) Incentive-Based Compensation Recovery Policy (this “Policy”) is to enable the Company to recover Erroneously Awarded Compensation in the event that the Company is required t

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 20-F

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 20-F (Mark One) ☐ REGISTRATION STATEMENT PURSUANT TO SECTION 12(b) OR 12(g) OF THE SECURITIES EXCHANGE ACT OF 1934 OR ☒ ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the fiscal year ended December 31, 2023 OR ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES E

CERTIFICATION BY THE PRINCIPAL FINANCIAL OFFICER PURSUANT TO SECTION 302 OF THE SARBANES-OXLEY ACT OF 2002

Exhibit 12.2 CERTIFICATION BY THE PRINCIPAL FINANCIAL OFFICER PURSUANT TO SECTION 302 OF THE SARBANES-OXLEY ACT OF 2002 I, Tiefeng Wang, certify that: 1. I have reviewed this annual report on Form 20-F of CDT Environmental Technology Investment Holdings Limited; 2. Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary

CERTIFICATION BY THE PRINCIPAL EXECUTIVE OFFICER PURSUANT TO SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002

Exhibit 13.1 CERTIFICATION BY THE PRINCIPAL EXECUTIVE OFFICER PURSUANT TO SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002 In connection with the annual report of CDT Environmental Technology Investment Holdings Limited (the “Company”) on Form 20-F for the year ended December 31, 2023 as filed with the Securities and Exchange Commission on the date hereof (the “Report”), I, Yunwu Li, Chief Executive

CERTIFICATION BY THE PRINCIPAL EXECUTIVE OFFICER PURSUANT TO SECTION 302 OF THE SARBANES-OXLEY ACT OF 2002

Exhibit 12.1 CERTIFICATION BY THE PRINCIPAL EXECUTIVE OFFICER PURSUANT TO SECTION 302 OF THE SARBANES-OXLEY ACT OF 2002 I, Yunwu Li, certify that: 1. I have reviewed this annual report on Form 20-F of CDT Environmental Technology Investment Holdings Limited; 2. Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to

U.S. Securities and Exchange Commission

EXHIBIT 16.1 U.S. Securities and Exchange Commission Office of the Chief Accountant 100 F Street Northeast Washington, DC 20549 RE: CDT Environmental Technology Investment Holdings Limited CIK: 0001793895 We have been furnished a copy of the statements being made by CDT Environmental Technology Investment Holdings Limited (the “Company”) in its Form 6-K dated April 26, 2024 and captioned “Change i

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, DC 20549 FORM 12b-25 NOTIFICATION OF LATE FILING

SEC FILE NUMBER 001-42007 CUSIP NUMBER G2030P 107 UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, DC 20549 FORM 12b-25 NOTIFICATION OF LATE FILING (Check one): ☐ Form 10-K ☒ Form 20-F ☐ Form 11-K ☐ Form 10-Q ☐ Form 10-D ☐ Form N-CEN ☐ Form N-CSR For Period Ended: December 31, 2023 ☐ Transition Report on Form 10-K ☐ Transition Report on Form 20-F ☐ Transition Report on Form 11-K ☐ Transition Report on Form 10-Q For the Transition Period Ended: Read Instruction (on back page) Before Preparing Form.

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of April, 2024 Commission File Number 001-4200

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of April, 2024 Commission File Number 001-42007 CDT Environmental Technology Investment Holdings Limited (Translation of registrant’s name into English) C1, 4th Floor, Building 1, Financial Base,

Form of Representative’s Warrant to Purchase Ordinary Shares

EXHIBIT 4.1 Form of Representative’s Warrant to Purchase Ordinary Shares THE REGISTERED HOLDER OF THIS REPRESENTATIVE’S WARRANT BY ITS ACCEPTANCE HEREOF, AGREES THAT IT WILL NOT SELL, TRANSFER OR ASSIGN THIS REPRESENTATIVE’S WARRANT EXCEPT AS HEREIN PROVIDED AND THE REGISTERED HOLDER OF THIS REPRESENTATIVE’S WARRANT AGREES THAT IT WILL NOT SELL, TRANSFER, ASSIGN, PLEDGE OR HYPOTHECATE THIS REPRESE

CDT Environmental Technology Investment Holdings Limited Announces Pricing of Initial Public Offering and Listing on Nasdaq

EXHIBIT 99.1 CDT Environmental Technology Investment Holdings Limited Announces Pricing of Initial Public Offering and Listing on Nasdaq SHENZHEN, CHINA, April 17, 2024 – via Globe Newswire – CDT Environmental Technology Investment Holdings Limited (“CDT”), a waste treatment company that designs, develops, manufactures, sells, installs, operates and maintains sewage treatment systems and provides

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of April, 2024 Commission File Number 001-4200

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of April, 2024 Commission File Number 001-42007 CDT Environmental Technology Investment Holdings Limited (Translation of registrant’s name into English) C1, 4th Floor, Building 1, Financial Base,

CDT Environmental Technology Investment Holdings Limited Announces Closing of Initial Public Offering

EXHIBIT 99.2 CDT Environmental Technology Investment Holdings Limited Announces Closing of Initial Public Offering SHENZHEN, CHINA, April 22, 2024 – via GLOBE NEWSWIRE – CDT Environmental Technology Investment Holdings Limited (“CDT”), a waste treatment company that designs, develops, manufactures, sells, installs, operates and maintains sewage treatment systems and provides sewage treatment servi

ESCROW AGREEMENT

EXHIBIT 10.1 ESCROW AGREEMENT THIS AGREEMENT (this “Agreement”) is made this April 17, 2024 by and among CDT Environmental Technology Investment Holdings Limited, a Cayman Islands company (the “Issuer”), the Underwriter (collectively, the “Underwriter”) whose name and address appear on the Information Sheet (as defined herein) attached to this Agreement and Continental Stock Transfer & Trust Compa

UNDERWRITING AGREEMENT

EXHIBIT 1.1 UNDERWRITING AGREEMENT April 17, 2024 WestPark Capital, Inc. 1900 Avenue of the Stars, Suite 310 Los Angeles, CA 90067 As Representative of the Underwriters named on Annex A hereto Ladies and Gentlemen: The undersigned, CDT Environmental Technology Investment Holdings Limited, a company limited by shares incorporated under the laws of the Cayman Islands (the “Company”), hereby confirms

1,500,000 Ordinary Shares CDT Environmental Technology Investment Holdings Limited

Filed Pursuant to Rule 424(b)(4) Registration No. 333-252127 PROSPECTUS 1,500,000 Ordinary Shares CDT Environmental Technology Investment Holdings Limited We are offering 1,500,000 ordinary shares. This is the initial public offering of ordinary shares of CDT Environmental Technology Investment Holdings Limited, a Cayman Islands holding company. The offering price of our ordinary shares in this of

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-A FOR REGISTRATION OF CERTAIN CLASSES OF SECURITIES PURSUANT TO SECTION 12(b) OR (g) OF THE SECURITIES EXCHANGE ACT OF 1934 CDT Environmental Technology Investment Holding

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-A FOR REGISTRATION OF CERTAIN CLASSES OF SECURITIES PURSUANT TO SECTION 12(b) OR (g) OF THE SECURITIES EXCHANGE ACT OF 1934 CDT Environmental Technology Investment Holdings Limited (Exact name of registrant as specified in its charter) Cayman Islands Not Applicable (State or other jurisdiction of incorporation or organi

Very truly yours,

WestPark Capital, Inc. 1800 Century Park East, Ste 220 Los Angeles, CA 90067 United States of America VIA EDGAR March 27, 2024 United States Securities and Exchange Commission Division of Corporation Finance 100 F Street, N.E. Washington, D.C. 20549 Re: CDT Environmental Technology Investment Holdings Limited (“Company”) Registration Statement on Form F-1, as amended File No. 333-252127 Ladies and

CDT Environmental Technology Investment Holdings Limited C1, 4th Floor, Building 1, Financial Base, No. 8 Kefa Road Nanshan District, Shenzhen, China 518057

CDT Environmental Technology Investment Holdings Limited C1, 4th Floor, Building 1, Financial Base, No.

As filed with the Securities and Exchange Commission on March 22, 2024.

As filed with the Securities and Exchange Commission on March 22, 2024. Registration Statement No. 333-252127 UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Amendment No. 16 to Form F-1 REGISTRATION STATEMENT UNDER THE SECURITIES ACT OF 1933 CDT Environmental Technology Investment Holdings Limited (Exact name of Registrant as specified in its charter) Not Applicable (Trans

As filed with the Securities and Exchange Commission on February 8, 2024.

As filed with the Securities and Exchange Commission on February 8, 2024. Registration Statement No. 333-252127 UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Amendment No. 15 to Form F-1 REGISTRATION STATEMENT UNDER THE SECURITIES ACT OF 1933 CDT Environmental Technology Investment Holdings Limited (Exact name of Registrant as specified in its charter) Not Applicable (Tra

January 26, 2024

January 26, 2024 VIA EDGAR U.S. Securities and Exchange Commission Division of Corporation Finance 100 F. Street, N.E. Washington, D.C. 20549 Attn: Irene Barberena-Meissner Laura Nicholson Yong Kim Gus Rodriguez Re: CDT Environmental Technology Investment Holdings Limited Amendment No. 13 to Registration Statement on Form F-1 Filed January 11, 2024 File No. 333-252127 Ladies and Gentlemen: CDT Env

As filed with the Securities and Exchange Commission on January 26, 2024.

As filed with the Securities and Exchange Commission on January 26, 2024. Registration Statement No. 333-252127 UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Amendment No. 14 to Form F-1 REGISTRATION STATEMENT UNDER THE SECURITIES ACT OF 1933 CDT Environmental Technology Investment Holdings Limited (Exact name of Registrant as specified in its charter) Not Applicable (Tra

FORM FWP

January 11, 2024

January 11, 2024 VIA EDGAR U.S. Securities and Exchange Commission Division of Corporation Finance 100 F. Street, N.E. Washington, D.C. 20549 Attn: Irene Barberena-Meissner Laura Nicholson Yong Kim Gus Rodriguez Re: CDT Environmental Technology Investment Holdings Limited Amendment No. 12 to Registration Statement on Form F-1 Filed December 20, 2023 File No. 333-252127 Ladies and Gentlemen: CDT En

As filed with the Securities and Exchange Commission on January 11, 2024.

As filed with the Securities and Exchange Commission on January 11, 2024. Registration Statement No. 333-252127 UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Amendment No. 13 to Form F-1 REGISTRATION STATEMENT UNDER THE SECURITIES ACT OF 1933 CDT Environmental Technology Investment Holdings Limited (Exact name of Registrant as specified in its charter) Not Applicable (Tra

December 20, 2023

EXHIBIT 99.2 December 20, 2023 VIA EDGAR U.S. Securities and Exchange Commission Division of Corporation Finance 100 F. Street, N.E. Washington, D.C. 20549 Re: CDT Environmental Technology Investment Holdings Limited Registration Statement on Form F-1 Request for Waiver and Representation under Item 8.A.4 of Form 20-F Ladies and Gentlemen: The undersigned, CDT Environmental Technology Investment H

As filed with the Securities and Exchange Commission on December 20, 2023.

As filed with the Securities and Exchange Commission on December 20, 2023. Registration Statement No. 333-252127 UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Amendment No. 12 to Form F-1 REGISTRATION STATEMENT UNDER THE SECURITIES ACT OF 1933 CDT Environmental Technology Investment Holdings Limited (Exact name of Registrant as specified in its charter) Not Applicable (Tr

December 20, 2023

December 20, 2023 VIA EDGAR U.S. Securities and Exchange Commission Division of Corporation Finance 100 F. Street, N.E. Washington, D.C. 20549 Attn: Irene Barberena-Meissner Laura Nicholson Yong Kim Gus Rodriguez Re: CDT Environmental Technology Investment Holdings Limited Amendment No. 11 to Registration Statement on Form F-1 Filed November 20, 2023 File No. 333-252127 Ladies and Gentlemen: CDT E

As filed with the Securities and Exchange Commission on November 20, 2023.

As filed with the Securities and Exchange Commission on November 20, 2023. Registration Statement No. 333-252127 UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Amendment No. 11 to Form F-1 REGISTRATION STATEMENT UNDER THE SECURITIES ACT OF 1933 CDT Environmental Technology Investment Holdings Limited (Exact name of Registrant as specified in its charter) Not Applicable (Tr

China Construction Eighth Engineering Bureau Co., Ltd. Wuyishan City Rural Domestic Wastewater Upgrading and Treatment Integrated Design, Procurement, Construction, and Operation Project for the Years 2021 to 2025 Part I: Agreement

EXHIBIT 10.18 China Construction Eighth Engineering Bureau Co., Ltd. Wuyishan City Rural Domestic Wastewater Upgrading and Treatment Integrated Design, Procurement, Construction, and Operation Project for the Years 2021 to 2025 Part I: Agreement Place of Signing: Wuyishan, Fujian Date of Signing: July 21, 2023 Contract Number: CDT20230721 Contractor: China Construction Eighth Engineering Bureau Co

Part I: Agreement

EXHIBIT 10.17 China Construction Eighth Engineering Bureau Co., Ltd. Wuyishan City Rural Domestic Wastewater Upgrading and Treatment Integrated Design, Procurement, Construction, and Operation Project for the Years 2021 to 2025 Part I: Agreement Place of Signing: Wuyishan,Fujian Date of Signing: September 28, 2022 Contract Number: CDT20221220 Contractor: China Construction Eighth Engineering Burea

Shenzhen Housing Lease System of Shenzhen Housing and Construction Bureau November, 2019

EXHIBIT 10.8 Shenzhen Housing Lease Contract (Non-Residential) System of Shenzhen Housing and Construction Bureau November, 2019 Explain 1. The text of this contract is a model text, and both parties can adjust the corresponding contents of the contract within the scope of relevant laws and regulations and in light of the actual situation when signing. 2. Before signing the contract, the lessor an

Contract for the Subcontracting of the Inland River Water Environmental Comprehensive Improvement PPP Project in Lianjiang County Urban Area Part I: Agreement

EXHIBIT 10.19 Contract for the Subcontracting of the Inland River Water Environmental Comprehensive Improvement PPP Project in Lianjiang County Urban Area Part I: Agreement Contractor: Longyuan Construction Group Co., Ltd. (referred to as Party A hereinafter) Subcontractor: Shenzhen CDT Environmental Technology Co., Ltd (referred to as Party B hereinafter)” Party A, in order to meet the constructi

As filed with the Securities and Exchange Commission on March 29, 2023.

As filed with the Securities and Exchange Commission on March 29, 2023. Registration Statement No. 333-252127 UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Amendment No. 10 to Form F-1 REGISTRATION STATEMENT UNDER THE SECURITIES ACT OF 1933 CDT Environmental Technology Investment Holdings Limited (Exact name of Registrant as specified in its charter) Not Applicable (Trans

As filed with the Securities and Exchange Commission on March 27, 2023.

As filed with the Securities and Exchange Commission on March 27, 2023. Registration Statement No. 333-252127 UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Amendment No. 9 to Form F-1 REGISTRATION STATEMENT UNDER THE SECURITIES ACT OF 1933 CDT Environmental Technology Investment Holdings Limited (Exact name of Registrant as specified in its charter) Not Applicable (Transl

Filing Fee Table

EXHIBIT 107 Calculation of Filing Fee Table F-1 (Form Type) CDT Environmental Technology Investment Holdings Limited (Exact Name of Registrant as Specified in its Charter) Table 1: Newly Registered and Carry Forward Securities Security Type Security Class Title Fee Calculation or Carry Forward Rule Amount Registered Proposed Maximum Offering Price Per Share(1) Maximum Aggregate Offering Price(1)(2) Fee Rate Amount of Registration Fee Carry Forward Form Type Carry Forward File Number Carry Forward Initial effective date Filing Fee Previously Paid In Connection with Unsold Securities to be Carried Forward Newly Registered Securities Fees to Be Paid Equity Ordinary Shares, par value $0.

March 13, 2023

March 13, 2023 VIA EDGAR U.S. Securities and Exchange Commission Division of Corporation Finance 100 F. Street, N.E. Washington, D.C. 20549 Attn: Irene Barberena-Meissner Laura Nicholson Yong Kim Gus Rodriguez Re: CDT Environmental Technology Investment Holdings Limited Amendment No. 8 to Registration Statement on Form F-1 Filed February 24, 2023 File No. 333-252127 Ladies and Gentlemen: CDT Envir

Letter of Friedman LLP, dated February 24, 2023

EXHIBIT 16.1 February 24, 2023 U.S. Securities and Exchange Commission 100 F Street, NE Washington, DC 20549 Dear Commissioners: We have read the statements made by CDT Environmental Technology Investment Holdings Limited (the “Registrant”) pursuant to Item 304(a)(1) of Regulation S-K included under the section titled “Change in Registrant’s Certifying Accountant” as part of the Registration State

February 24, 2023

February 24, 2023 VIA EDGAR U.S. Securities and Exchange Commission Division of Corporation Finance 100 F. Street, N.E. Washington, D.C. 20549 Attn: Irene Barberena-Meissner Laura Nicholson Re: CDT Environmental Technology Investment Holdings Limited Amendment No. 7 to Registration Statement on Form F-1 Filed December 23, 2022 File No. 333-252127 Ladies and Gentlemen: CDT Environmental Technology

As filed with the Securities and Exchange Commission on February 24, 2023.

As filed with the Securities and Exchange Commission on February 24, 2023. Registration Statement No. 333-252127 UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Amendment No. 8 to Form F-1 REGISTRATION STATEMENT UNDER THE SECURITIES ACT OF 1933 CDT Environmental Technology Investment Holdings Limited (Exact name of Registrant as specified in its charter) Not Applicable (Tra

Unofficial English Translation of Workshop Lease Contract, dated as of August 1, 2022, by and between Fujian Wuyi Automobile Manufacturing Co., Ltd. and Shenzhen CDT Environmental Technology Co., Ltd.

EXHIBIT 10.7 Workshop lease contract Lessor (hereinafter referred to as Party A): Fujian Wuyi Automobile Manufacturing Co., Ltd. Lessee (hereinafter referred to as Party B); Shenzhen CDT Environmental Technology Co., Ltd. According to relevant laws and regulations, Party A and Party B have reached the following terms of the factory lease contract through friendly negotiation. Both sides abide by i

Filing Fee Table

EXHIBIT 107 Calculation of Filing Fee Table F-1 (Form Type) CDT Environmental Technology Investment Holdings Limited (Exact Name of Registrant as Specified in its Charter) Table 1: Newly Registered and Carry Forward Securities Security Type Security Class Title Fee Calculation or Carry Forward Rule Amount Registered Proposed Maximum Offering Price Per Share(1) Maximum Aggregate Offering Price(1)(2) Fee Rate Amount of Registration Fee Carry Forward Form Type Carry Forward File Number Carry Forward Initial effective date Filing Fee Previously Paid In Connection with Unsold Securities to be Carried Forward Newly Registered Securities Fees to Be Paid Equity Ordinary Shares, par value $0.

List of Subsidiaries

EX-21.1 3 e3906ex21-1.htm EXHIBIT 21.1 Exhibit 21.1 CDT Environmental Technology Investment Holdings Limited LIST OF SUBSIDIARIES Name of Subsidiary Jurisdiction of Incorporation or Organization Chao Qiang Holdings Limited British Virgin Islands CDT Environmental Technology Group Limited British Virgin Islands Ultra Leader Investments Limited Hong Kong CDT Environmental Technology (Hong Kong) Limi

Request for Waiver and Representation under Item 8.A.4 of Form 20-F

EXHIBIT 99.2 December 23, 2022 VIA EDGAR U.S. Securities and Exchange Commission Division of Corporation Finance 100 F. Street, N.E. Washington, D.C. 20549 Re: CDT Environmental Technology Investment Holdings Limited Registration Statement on Form F-1 Request for Waiver and Representation under Item 8.A.4 of Form 20-F Ladies and Gentlemen: The undersigned, CDT Environmental Technology Investment H

As filed with the Securities and Exchange Commission on December 23, 2022.

F-1/A 1 e3906f-1a7.htm FORM F-1/A7 As filed with the Securities and Exchange Commission on December 23, 2022. Registration Statement No. 333-252127 UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Amendment No. 7 to Form F-1 REGISTRATION STATEMENT UNDER THE SECURITIES ACT OF 1933 CDT Environmental Technology Investment Holdings Limited (Exact name of Registrant as specified

December 23, 2022

December 23, 2022 VIA EDGAR U.S. Securities and Exchange Commission Division of Corporation Finance 100 F. Street, N.E. Washington, D.C. 20549 Attn: Irene Barberena-Meissner Laura Nicholson Re: CDT Environmental Technology Investment Holdings Limited Amendment No. 6 to Registration Statement on Form F-1 Filed March 25, 2022 File No. 333-252127 Ladies and Gentlemen: CDT Environmental Technology Inv

Unofficial English Translation of Shenzhen House Lease Contract, dated as of October 1, 2022, by and between Shenzhen CDT Environmental Technology Co., Ltd. and Shenzhen Science & Industrial Park Group Co., Ltd.

EXHIBIT 10.8 Shenzhen House Lease Contract Prepared by Shenzhen Housing Rental Management Office Housing Lease Registration Notice 1. The material to be submitted for the registration of the housing lease: (I) Real estate rights certificate or other valid documents proving its property rights (right to use) (providing the original and keeping a copy) (II) The identity certificate of the lessor or

As filed with the Securities and Exchange Commission on March 25, 2022.

As filed with the Securities and Exchange Commission on March 25, 2022. Registration Statement No. 333-252127 UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Amendment No. 6 to Form F-1 REGISTRATION STATEMENT UNDER THE SECURITIES ACT OF 1933 CDT Environmental Technology Investment Holdings Limited (Exact name of Registrant as specified in its charter) Not Applicable (Transl

March 25, 2022

March 25, 2022 VIA EDGAR U.S. Securities and Exchange Commission Division of Corporation Finance 100 F. Street, N.E. Washington, D.C. 20549 Attn: Irene Barberena-Meissner Laura Nicholson Re: CDT Environmental Technology Investment Holdings Limited Amendment No. 5 to Registration Statement on Form F-1 Filed March 1, 2022 File No. 333-252127 Ladies and Gentlemen: CDT Environmental Technology Investm

Neitianxi Wuxing Community Sewage Treatment Station and Storage Tank Project (Storage Tank) Equipment Procurement, Installation and Auxiliary Material Procurement, Technical Service and Construction Contract, dated as of October 15, 2021, by and between Zhongjian Xinhongding Environment Group Co., Ltd. and Shenzhen CDT Environmental Technology Co., Ltd.

Exhibit 10.16 Neitianxi Wuxing Community Sewage Treatment Station and Storage Tank Project (Storage Tank) Equipment Procurement, Installation and Auxiliary Material Procurement, Technical Service and Construction Contract Employer: Zhongjian Xinhongding Environment Group Co., Ltd. (Hereinafter referred to as Party A) Contractor: Shenzhen CDT Environmental Technology Co., Ltd (hereinafter referred

March 1, 2022

March 1, 2022 VIA EDGAR U.S. Securities and Exchange Commission Division of Corporation Finance 100 F. Street, N.E. Washington, D.C. 20549 Attn: Irene Barberena-Meissner Laura Nicholson Re: CDT Environmental Technology Investment Holdings Limited Amendment No. 4 to Registration Statement on Form F-1 Filed January 19, 2022 File No. 333-252127 Ladies and Gentlemen: CDT Environmental Technology Inves

Filing Fee Table

EX-FILING FEES 7 e3531ex-107.htm EXHIBIT 107 EXHIBIT 107 Calculation of Filing Fee Table F-1 (Form Type) CDT Environmental Technology Investment Holdings Limited (Exact Name of Registrant as Specified in its Charter) Table 1: Newly Registered and Carry Forward Securities Security Type Security Class Title Fee Calculation or Carry Forward Rule Amount Registered Proposed Maximum Offering Price Per S

As filed with the Securities and Exchange Commission on March 1, 2022.

F-1/A 1 e3531f-1a5.htm FORM F-1/A5 As filed with the Securities and Exchange Commission on March 1, 2022. Registration Statement No. 333-252127 UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Amendment No. 5 to Form F-1 REGISTRATION STATEMENT UNDER THE SECURITIES ACT OF 1933 CDT Environmental Technology Investment Holdings Limited (Exact name of Registrant as specified in i

Request for Waiver and Representation under Item 8.A.4 of Form 20-F

EX-99.2 6 e3531ex99-2.htm EXHIBIT 99.2 Exhibit 99.2 March 1, 2022 VIA EDGAR U.S. Securities and Exchange Commission Division of Corporation Finance 100 F. Street, N.E. Washington, D.C. 20549 Re: CDT Environmental Technology Investment Holdings Limited Registration Statement on Form F-1 Request for Waiver and Representation under Item 8.A.4 of Form 20-F Ladies and Gentlemen: The undersigned, CDT En

Drainage Pipe Network Reconstruction Project (EPC) Project in Guankouhouxi Area Trenchless Pipeline Repair and Sporadic Works, dated as of September 30, 2021, by and between CCCC Shanghai Dredging Co., Ltd. and Shenzhen CDT Environmental Technology Co., Ltd.

EX-10.15 3 e3531ex10-15.htm EXHIBIT 10.15 Exhibit 10.15 CCCC Shanghai Dredging Co., Ltd. Drainage Pipe Network Reconstruction Project (EPC) Project in Guankouhouxi Area Trenchless Pipeline Repair and Sporadic Works Part I Agreement Place of signing: Xiamen, Fujian ; Date of signing: September 30th, 2021 ; Contract number: ZJ20210918 Contractor: CCCC Shanghai Dredging Co., Ltd. (Hereinafter referre

Unofficial English Translation of Zhongshan City Comprehensive Treatment Project Contract for Non-up-to-standard Water Body, dated as of April 5, 2021, by and between Shenzhen Beier Environmental Protection Technology Co., Ltd and Shenzhen CDT Environmental Technology Co., Ltd.

EX-10.14 2 e3531ex10-14.htm EXHIBIT 10.14 Exhibit 10.14 Contract number: CDTZS21040503 Contract Project Name: Zhongshan City Comprehensive Treatment Project Contract for Non-up-to-standard Water Body Buyer: Shenzhen Beier Environmental Protection Technology Co., Ltd Seller: Shenzhen CDT Environmental Technology Co., Ltd Place of signing: Shenzhen Date of signing: 1 Employer: Shenzhen Beier Environ

As filed with the Securities and Exchange Commission on January 19, 2022.

As filed with the Securities and Exchange Commission on January 19, 2022. Registration Statement No. 333-252127 UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Amendment No. 4 to Form F-1 REGISTRATION STATEMENT UNDER THE SECURITIES ACT OF 1933 CDT Environmental Technology Investment Holdings Limited (Exact name of Registrant as specified in its charter) Not Applicable (Tran

CDT Environmental Technology Investment Holdings Limited C1, 4th Floor, Building 1, Financial Base, No. 8 Kefa Road Nanshan District, Shenzhen, China 518057

CDT Environmental Technology Investment Holdings Limited C1, 4th Floor, Building 1, Financial Base, No.

As filed with the Securities and Exchange Commission on September 24, 2021.

As filed with the Securities and Exchange Commission on September 24, 2021. Registration Statement No. 333-252127 UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Amendment No. 3 to Form F-1 REGISTRATION STATEMENT UNDER THE SECURITIES ACT OF 1933 CDT Environmental Technology Investment Holdings Limited (Exact name of Registrant as specified in its charter) Not Applicable (Tr

September 24, 2021

September 24, 2021 Yunwu Li Chief Executive Officer and Chairman of the Board of Directors CDT Environmental Technology Investment Holdings Limited C1, 4th Floor, Building 1, Financial Base, No.

CDT Environmental Technology Investment Holdings Limited C1, 4th Floor, Building 1, Financial Base, No. 8 Kefa Road Nanshan District, Shenzhen, China 518057

CDT Environmental Technology Investment Holdings Limited C1, 4th Floor, Building 1, Financial Base, No.

Form of Indemnification Escrow Agreement

Exhibit 10.1 ESCROW AGREEMENT THIS AGREEMENT (this “Agreement”) is made this [•], 2021 by and among CDT Environmental Technology Investment Holdings Limited, a Cayman Islands company (the “Issuer”), the Underwriter (collectively, the “Underwriter”) whose name and address appear on the Information Sheet (as defined herein) attached to this Agreement and Continental Stock Transfer & Trust Company, 1

Form of Representative’s Warrant

EX-4.2 4 e2858ex4-2.htm EXHIBIT 4.2 Exhibit 4.2 Form of Representative’s Warrant to Purchase Ordinary Shares THE REGISTERED HOLDER OF THIS REPRESENTATIVE’S WARRANT BY ITS ACCEPTANCE HEREOF, AGREES THAT IT WILL NOT SELL, TRANSFER OR ASSIGN THIS REPRESENTATIVE’S WARRANT EXCEPT AS HEREIN PROVIDED AND THE REGISTERED HOLDER OF THIS REPRESENTATIVE’S WARRANT AGREES THAT IT WILL NOT SELL, TRANSFER, ASSIGN

Form of Underwriting Agreement

EX-1.1 2 e2858ex1-1.htm EXHIBIT 1.1 Exhibit 1.1 UNDERWRITING AGREEMENT [•], 2021 WestPark Capital, Inc. 1900 Avenue of the Stars, Suite 310 Los Angeles, CA 90067 As Representative of the Underwriters named on Annex A hereto Ladies and Gentlemen: The undersigned, CDT Environmental Technology Investment Holdings Limited, a company limited by shares incorporated under the laws of the Cayman Islands (

Form of Amended and Restated Memorandum and Articles of Association (to be effective in connection with the completion of this offering)

EX-3.2 3 e2858ex3-2.htm EXHIBIT 3.2 Exhibit 3.2 THE COMPANIES ACT (AS REVISED) COMPANY LIMITED BY SHARES AMENDED AND RESTATED MEMORANDUM AND ARTICLES OF ASSOCIATION OF CDT Environmental Technology Investment Holdings Limited 城道通環保科技投資控股有限公司 (Adopted by a Special Resolution passed on 1 February, 2021 and effective immediately prior to the completion of the Company’s initial public offering of ordin

As filed with the Securities and Exchange Commission on June 25, 2021.

As filed with the Securities and Exchange Commission on June 25, 2021. Registration Statement No. 333-252127 UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Amendment No. 2 to Form F-1 REGISTRATION STATEMENT UNDER THE SECURITIES ACT OF 1933 CDT Environmental Technology Investment Holdings Limited (Exact name of Registrant as specified in its charter) Not Applicable (Transla

- FORM F-1/A

F-1/A 1 e2395f-1a1.htm FORM F-1/A As filed with the Securities and Exchange Commission on February 12, 2021. Registration Statement No. 333-252127 UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Amendment No. 1 to Form F-1 REGISTRATION STATEMENT UNDER THE SECURITIES ACT OF 1933 CDT Environmental Technology Investment Holdings Limited (Exact name of Registrant as specified i

Form of Indemnification Escrow Agreement

EX-10.1 6 e2395ex10-1.htm EXHIBIT 10.1 Exhibit 10.1 INDEMNIFICATION ESCROW AGREEMENT THIS INDEMNIFICATION ESCROW AGREEMENT (this “Agreement”) dated as of [●], 2021 is entered into by and among CDT Environmental Technology Investment Holdings Limited (the “Company”), ViewTrade Securities, Inc. (the “Underwriter”), and Pearlman Law Group LLP (the “Escrow Agent”). WITNESSETH: WHEREAS, the Company is

Form of Amended and Restated Memorandum and Articles of Association (to be effective in connection with the completion of this offering)

EX-3.2 3 e2395ex3-2.htm EXHIBIT 3.2 Exhibit 3.2 THE COMPANIES ACT (AS REVISED) COMPANY LIMITED BY SHARES AMENDED AND RESTATED MEMORANDUM AND ARTICLES OF ASSOCIATION OF CDT Environmental Technology Investment Holdings Limited (Adopted by a Special Resolution passed on February 1, 2021 and effective immediately prior to the completion of the Company’s initial public offering of ordinary shares on th

Code of Business Conduct and Ethics

EX-99.1 8 e2395ex99-1.htm EXHIBIT 99.1 Exhibit 99.1 CDT Environmental Technology Investment Holdings Limited CODE OF BUSINESS CONDUCT AND ETHICS INTRODUCTION Purpose This Code of Business Conduct and Ethics (this “Code”) has been adopted by the Board of Directors (the “Board”) of CDT Environmental Technology Investment Holdings Limited (the “Company”) to aid employees, officers and directors in ma

Memorandum and Articles of Association, as currently in effect

Exhibit 3.1 THE COMPANIES LAW EXEMPTED COMPANY LIMITED BY SHARES MEMORANDUM OF ASSOCIATION OF CDT Environmental Technology Investment Holdings Limited 1. The name of the Company is CDT Environmental Technology Investment Holdings Limited and its dual foreign name is . 2. The Registered Office of the Company shall be at the offices of Codan Trust Company (Cayman) Limited, Cricket Square, Hutchins D

Unofficial English Translation of House-leasing Contract, dated as of December 31, 2020, by and between Fuao Investment Development Co., Ltd. and Shenzhen CDT Environmental Technology Co., Ltd.

Exhibit 10.7 House-leasing Contract Lessor (Party A):Fuao Investment Development Co., Ltd. Business license number: 440301109886405 Address: No. 27, Zhenxing Road, Liyu River, Lou Village Contact number: 13316808939 Lessee (Party B):Shenzhen CDT Environmental Technology Co., Ltd. Business license number: 914403000527833426 Company address: contact number: 0755-86667996 In accordance with the Contr

Form of Independent Director Agreement between the registrant and certain of its independent directors

Exhibit 10.4 INDEPENDENT DIRECTOR AGREEMENT THIS INDEPENDENT DIRECTOR AGREEMENT (this “Agreement”), dated as of (the “Effective Date”), is by and between CDT Environmental Technology Investment Holdings Limited, a company incorporated under the laws of the Cayman Islands (the “Company”), and , an individual (the “Director”). RECITALS WHEREAS, the Company desires to appoint the Director to serve on

Form of Employment Agreement between the registrant and its officers

EX-10.6 7 e2362ex10-6.htm EXHIBIT 10.6 Exhibit 10.6 EMPLOYMENT AGREEMENT THIS EMPLOYMENT AGREEMENT (this “Agreement”), dated as of , is by and between CDT Environmental Technology Investment Holdings Limited, a company incorporated under the laws of the Cayman Islands (the “Company”), and , an individual (the “Executive”). RECITALS WHEREAS, the Company desires to employ the Executive and to assure

Form of Director Agreement between the registrant and its directors

Exhibit 10.3 DIRECTOR AGREEMENT THIS DIRECTOR AGREEMENT (this “Agreement”), dated as of (the “Effective Date”), is by and between CDT Environmental Technology Investment Holdings Limited, a company incorporated under the laws of the Cayman Islands (the “Company”), and , an individual (the “Director”). RECITALS WHEREAS, the Company desires to appoint the Director to serve on the Company’s board of

Specimen certificate evidencing ordinary shares

EX-4.1 2 e2362ex4-1.htm EXHIBIT 4.1 Exhibit 4.1

Employment Agreement, dated as of September 1, 2019, by and between Yunwu Li and the registrant

EX-10.9 10 e2362ex10-9.htm EXHIBIT 10.9 Exhibit 10.9 EMPLOYMENT AGREEMENT THIS EMPLOYMENT AGREEMENT (this “Agreement”), dated as of September 1, 2019, is by and between CDT Environmental Technology Investment Holdings Limited, a company incorporated under the laws of the Cayman Islands (the “Company”), and Yunwu Li, an individual (the “Executive”). RECITALS WHEREAS, the Company desires to employ t

Form of Independent Director Agreement between the registrant and its U.S. independent director

EX-10.5 6 e2362ex10-5.htm EXHIBIT 10.5 Exhibit 10.5 INDEPENDENT DIRECTOR AGREEMENT THIS INDEPENDENT DIRECTOR AGREEMENT (this “Agreement”), dated as of (the “Effective Date”), is by and between CDT Environmental Technology Investment Holdings Limited, a company incorporated under the laws of the Cayman Islands (the “Company”), and , an individual (the “Director”). RECITALS WHEREAS, the Company desi

Employment Agreement, dated as of September 1, 2019, by and between Zijiang Liu and the registrant

EX-10.10 11 e2362ex10-10.htm EXHIBIT 10.10 Exhibit 10.10 EMPLOYMENT AGREEMENT THIS EMPLOYMENT AGREEMENT (this “Agreement”), dated as of September 1, 2019, is by and between CDT Environmental Technology Investment Holdings Limited, a company incorporated under the laws of the Cayman Islands (the “Company”), and Zijiang Liu, an individual (the “Executive”). RECITALS WHEREAS, the Company desires to e

Form of Indemnification Agreement between the registrant and its officers and directors

EX-10.2 3 e2362ex10-2.htm EXHIBIT 10.2 Exhibit 10.2 INDEMNIFICATION AGREEMENT This Indemnification Agreement (this “Agreement”), dated as of , is by and between CDT Environmental Technology Investment Holdings Limited, a company incorporated under the laws of the Cayman Islands (the “Company”) and (the “Indemnitee”). RECITALS WHEREAS, Indemnitee is a director or officer of the Company and in such

Employment Agreement, dated as of November 20, 2019, by and between Tiefeng Wang and the registrant

Exhibit 10.13 EMPLOYMENT AGREEMENT THIS EMPLOYMENT AGREEMENT (this “Agreement”), dated as of November 20, 2019, is by and between CDT Environmental Technology Investment Holdings Limited, a company incorporated under the laws of the Cayman Islands (the “Company”), and Tiefeng Wang, an individual (the “Executive”). RECITALS WHEREAS, the Company desires to employ the Executive and to assure itself o

Power of Attorney (included on signature page of Form F-1 filed on January 15, 2021)

F-1 1 e2362f-1.htm FORM F-1 As filed with the Securities and Exchange Commission on January 15, 2021. Registration Statement No. 333- UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form F-1 REGISTRATION STATEMENT UNDER THE SECURITIES ACT OF 1933 CDT Environmental Technology Investment Holdings Limited (Exact name of registrant as specified in its charter) Not Applicable (T

Request for Waiver and Representation under Item 8.A.4 of Form 20-F

EX-99.2 17 e2362ex99-2.htm EXHIBIT 99.2 Exhibit 99.2 January 15, 2021 VIA EDGAR U.S. Securities and Exchange Commission Division of Corporation Finance 100 F. Street, N.E. Washington, D.C. 20549 Re: CDT Environmental Technology Investment Holdings Limited Registration Statement on Form F-1 Request for Waiver and Representation under Item 8.A.4 of Form 20-F Ladies and Gentlemen: The undersigned, CD

List of Subsidiaries

EX-21.1 15 e2362ex21-1.htm EXHIBIT 21.1 Exhibit 21.1 CDT Environmental Technology Investment Holdings Limited LIST OF SUBSIDIARIES Name of Subsidiary Jurisdiction of Incorporation or Organization Chao Qiang Holdings Limited British Virgin Islands CDT Environmental Technology Group Limited British Virgin Islands Ultra Leader Investments Limited Hong Kong CDT Environmental Technology (Hong Kong) Lim

Unofficial English Translations of House Lease Contracts, dated as of August 21, 2020, by and between Shenzhen CDT Environmental Technology Co., Ltd. and Shenzhen Science & Industrial Park Group Co., Ltd.

EX-10.8 9 e2362ex10-8.htm EXHIBIT 10.8 Exhibit 10.8 Shenzhen House Lease Contract Prepared by Shenzhen Housing Rental Management Office 1 Housing Lease Registration Notice 1. The material to be submitted for the registration of the housing lease: (I) Real estate rights certificate or other valid documents proving its property rights (right to use) (providing the original and keeping a copy) (II) T

Employment Agreement, dated as of September 1, 2019, by and between Yuntao Guan and the registrant

Exhibit 10.12 EMPLOYMENT AGREEMENT THIS EMPLOYMENT AGREEMENT (this “Agreement”), dated as of September 1,2019, is by and between CDT Environmental Technology Investment Holdings Limited, a company incorporated under the laws of the Cayman Islands (the “Company”), and Yuntao Guan, an individual (the “Executive”). RECITALS WHEREAS, the Company desires to employ the Executive and to assure itself of

Employment Agreement, dated as of September 1, 2019, by and between Jianfei Yu and the registrant

EX-10.11 12 e2362ex10-11.htm EXHIBIT 10.11 Exhibit 10.11 EMPLOYMENT AGREEMENT THIS EMPLOYMENT AGREEMENT (this “Agreement”), dated as of September 1, 2019, is by and between CDT Environmental Technology Investment Holdings Limited, a company incorporated under the laws of the Cayman Islands (the “Company”), and Jianfei Yu, an individual (the “Executive”). RECITALS WHEREAS, the Company desires to em

***

November 27, 2020 VIA EDGAR U.S. Securities and Exchange Commission Division of Corporation Finance 100 F. Street, N.E. Washington, D.C. 20549 Attn: Irene Barberena-Meissner Laura Nicholson Re: CDT Environmental Technology Investment Holdings Limited Amendment No. 2 to Draft Registration Statement on Form F-1 Submitted September 23, 2020 CIK No: 0001793895 Ladies and Gentlemen: CDT Environmental T

Confidential Draft No. 4 as confidentially submitted to the Securities and Exchange Commission on November 27, 2020. This draft registration statement has not been publicly filed with the Securities and Exchange Commission and all information herein

Confidential Draft No. 4 as confidentially submitted to the Securities and Exchange Commission on November 27, 2020. This draft registration statement has not been publicly filed with the Securities and Exchange Commission and all information herein remains strictly confidential. Registration Statement No. 333- UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form F-1 REGIST

Confidential Draft No. 3 as confidentially submitted to the Securities and Exchange Commission on September 23, 2020. This draft registration statement has not been publicly filed with the Securities and Exchange Commission and all information herein

Confidential Draft No. 3 as confidentially submitted to the Securities and Exchange Commission on September 23, 2020. This draft registration statement has not been publicly filed with the Securities and Exchange Commission and all information herein remains strictly confidential. Registration Statement No. 333- UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form F-1 REGIS

January 13, 2020

Exhibit 99.2 January 13, 2020 VIA EDGAR U.S. Securities and Exchange Commission Division of Corporation Finance 100 F. Street, N.E. Washington, D.C. 20549 Re: CDT Environmental Technology Investment Holdings Limited Draft Registration Statement on Form F-1 Request for Waiver and Representation under Item 8.A.4 of Form 20-F Ladies and Gentlemen: The undersigned, CDT Environmental Technology Investm

Confidential Draft No. 2 as confidentially submitted to the Securities and Exchange Commission on January 13, 2020. This draft registration statement has not been publicly filed with the Securities and Exchange Commission and all information herein r

Confidential Draft No. 2 as confidentially submitted to the Securities and Exchange Commission on January 13, 2020. This draft registration statement has not been publicly filed with the Securities and Exchange Commission and all information herein remains strictly confidential. Registration Statement No. 333- UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form F-1 REGISTR

As confidentially submitted to the Securities and Exchange Commission on November 15, 2019. This draft registration statement has not been publicly filed with the Securities and Exchange Commission and all information herein remains strictly confiden

As confidentially submitted to the Securities and Exchange Commission on November 15, 2019.