# EDGAR Filing Document

**Accession Number:** 0001793895
**File Stem:** 0001731122-25-001081
**Filing Date:** 2025-8
**Character Count:** 2531
**Document Hash:** 2b22a7a9df6f4697725a01a77b8e13b5
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0001731122-25-001081.hdr.sgml**: 20260116

**ACCESSION NUMBER**: 0001731122-25-001081

**CONFORMED SUBMISSION TYPE**: CORRESP

**PUBLIC DOCUMENT COUNT**: 1

**FILED AS OF DATE**: 20250807

**FILER**: 

**COMPANY DATA:**
- **COMPANY CONFORMED NAME:** CDT Environmental Technology Investment Holdings Ltd
- **CENTRAL INDEX KEY:** 0001793895
- **STANDARD INDUSTRIAL CLASSIFICATION:** SANITARY SERVICES [4950]
- **ORGANIZATION NAME:** 01 Energy & Transportation
- **EIN:** 000000000
- **STATE OF INCORPORATION:** E9
- **FISCAL YEAR END:** 1231

**FILING VALUES:**
- **FORM TYPE:** CORRESP

**BUSINESS ADDRESS:**
- **STREET 1:** C1, 4TH FLOOR, BUILDING 1,
- **STREET 2:** FINANCIAL BASE, NO.8 KEFA ROAD
- **CITY:** NANSHAN DISTRICT
- **STATE:** F4
- **ZIP:** 518057
- **BUSINESS PHONE:** 86-0755-86667922

**MAIL ADDRESS:**
- **STREET 1:** C1, 4TH FLOOR, BUILDING 1,
- **STREET 2:** FINANCIAL BASE, NO.8 KEFA ROAD
- **CITY:** NANSHAN DISTRICT
- **STATE:** F4
- **ZIP:** 518057

**FORMER COMPANY:**
- **FORMER CONFORMED NAME:** CDT Enviromental Technology Investment Holdings Ltd
- **DATE OF NAME CHANGE:** 20191113

August 7, 2025

United States Securities and Exchange Commission

Division of Corporation Finance

Office of Energy & Transportation

100 F. Street, NE

Washington, DC 20549

**Re: CDT Environmental Technology Investment Holdings Limited**

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;**Form 20-F for the Fiscal Year ended December 31, 2024**

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; **Filed May 15, 2025**

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; **File No. 001-42007**

Dear Ms. Guobadia and Mr. Babula:

CDT Environmental Technology Investment Holdings Limited (the "Company") is in receipt of your letter dated July 29, 2025 with respect to the Company's above-referenced filing. The comment letter requests that the Company provide its written response within ten (10) business days or to advise when it will provide a response. The Company is in the process of preparing its response and respectfully requests an extension to provide its written response on or before August 26, 2025.

If you have any questions pertaining to the extension request, please do not hesitate to contact Clay Parker at (305) 539-3306 or Julie Rizzo at (919) 743-7336 of K&L Gates LLP.

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| |
|:---|
| Sincerely, |
| /s/ Yunwu Li |
| Yunwu Li |
| Chief Executive Officer and Chairman of the Board of Directors |

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