# EDGAR Filing Document

**Accession Number:** 0002034723
**File Stem:** 0001213900-25-083098
**Filing Date:** 2025-9
**Character Count:** 31228
**Document Hash:** e12b369118b8caddfd787a9878d3bd6b
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0001213900-25-083098.hdr.sgml**: 20250902

**ACCESSION NUMBER**: 0001213900-25-083098

**CONFORMED SUBMISSION TYPE**: F-1/A

**PUBLIC DOCUMENT COUNT**: 5

**FILED AS OF DATE**: 20250902

**DATE AS OF CHANGE**: 20250902

**FILER**: 

**COMPANY DATA:**
- **COMPANY CONFORMED NAME:** One & one Green Technologies. INC
- **CENTRAL INDEX KEY:** 0002034723
- **STANDARD INDUSTRIAL CLASSIFICATION:** WHOLESALE-MISC DURABLE GOODS [5090]
- **ORGANIZATION NAME:** 07 Trade & Services
- **EIN:** 000000000

**FILING VALUES:**
- **FORM TYPE:** F-1/A
- **SEC ACT:** 1933 Act
- **SEC FILE NUMBER:** 333-284375
- **FILM NUMBER:** 251283962

**BUSINESS ADDRESS:**
- **STREET 1:** NO. 45 DILIMAN 1 SAN RAFAEL
- **CITY:** BULACAN
- **STATE:** R6
- **ZIP:** 3017
- **BUSINESS PHONE:** 63 919-0785532

**MAIL ADDRESS:**
- **STREET 1:** NO. 45 DILIMAN 1 SAN RAFAEL
- **CITY:** BULACAN
- **STATE:** R6
- **ZIP:** 3017

#### As filed with the U.S. Securities and Exchange Commission on September 2 , 2025.

#### Registration No. 333-284375

#### UNITED STATES<br>SECURITIES AND EXCHANGE COMMISSION<br>Washington, D.C. 20549

#### ____________________

#### AMENDMENT NO. 4 <br>TO

#### FORM F-1<br>REGISTRATION STATEMENT<br>UNDER<br>THE SECURITIES ACT OF 1933

#### ____________________

#### One and one Green Technologies. INC<br> (Exact Name of Registrant as Specified in its Charter)

#### Not Applicable<br> (Translation of Registrant's Name into English)

#### ____________________

---

| | | |
|:---|:---|:---|
|  **Cayman Islands** | **5093** | **Not Applicable** |
|  (State or other jurisdiction of <br>incorporation or organization) | (Primary Standard Industrial <br>Classification Code Number) | (I.R.S. Employer <br>Identification No.) |

---

**1**<sup>st</sup> **Diliman<br>San Rafael Bulacan, Philippines, 3008<br>+63 919**-0785532<br>(Address, including zip code, and telephone number, including area code, of registrant's principal executive offices)

**c/o Cogency Global Inc.<br>122 East 42**<sup>nd</sup> **Street, 18**<sup>th</sup> **Floor<br>New York, NY 10168<br>+1 800**-221-0102<br>(Name, address, including zip code, and telephone number, including area code, of agent for service)

Copies of all communications, including communications sent to agent for service, should be sent to:

---

| | |
|:---|:---|
|  **William Rosenstadt, Esq.** <br>**Mengyi "Jason" Ye, Esq. <br>Yarona Yieh, Esq.** <br>**Ortoli Rosenstadt LLP** <br>**366 Madison Avenue, 3**<sup>rd</sup> **Floor** <br>**New York, NY 10017** <br>**Telephone: 212-588-0022** | **Ying Li, Esq.<br>Guillaume de Sampigny, Esq.<br>Hunter Taubman Fischer & Li LLC<br>950 Third Avenue, 19**<sup>th</sup> **Floor<br>New York, NY 10022<br>Telephone: 212**-530-2206 |

---

#### Approximate date of commencement of proposed sale to the public: As soon as practicable after this Registration Statement becomes effective.
If any of the securities being registered on this Form are to be offered on a delayed or continuous basis pursuant to Rule 415 under the Securities Act of 1933, check the following box: ☐

If this Form is filed to register additional securities for an offering pursuant to Rule 462(b) under the Securities Act, check the following box and list the Securities Act registration statement number of the earlier effective registration statement for the same offering. ☐

If this Form is a post-effective amendment filed pursuant to Rule 462(c) under the Securities Act, check the following box and list the Securities Act registration statement number of the earlier effective registration statement for the same offering. ☐

If this Form is a post-effective amendment filed pursuant to Rule 462(d) under the Securities Act, check the following box and list the Securities Act registration number of the earlier effective registration statement for the same offering. ☐

Indicate by check mark whether the registrant is an emerging growth company as defined in Rule 405 of the Securities Act of 1933.

Emerging growth company. ☒

If an emerging growth company that prepares its financial statements in accordance with U.S. GAAP, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 7(a)(2)(B) of the Securities Act. ☐

____________

† The term "new or revised financial accounting standard" refers to any update issued by the Financial Accounting Standards Board to its Accounting Standards Codification after April 5, 2012.

**The Registrant hereby amends this registration statement on such date or dates as may be necessary to delay its effective date until the registrant shall file a further amendment which specifically states that this registration statement shall thereafter become effective in accordance with Section 8(a) of the Securities Act of 1933, as amended, or until the registration statement shall become effective on such date as the U.S. Securities and Exchange Commission, acting pursuant to said Section 8(a), may determine.**

------

#### Explanatory Note
This Amendment No. 4 to the Registration Statement on Form F-1 (File No. 333-284375) of One and one Green Technologies. INC is being filed for the purpose of filing Exhibit 5.1 and Exhibit 23.1. Accordingly, this Amendment No. 4 consists only of the facing page, this explanatory note, Part II of the Registration Statement, the signature pages to the Registration Statement and the filed exhibits. This Amendment No. 4 does not modify any provision of the prospectus that forms a part of the Registration Statement. Accordingly, a preliminary prospectus has been omitted.

------

#### Part II — Information Not Required in the Prospectus

#### Item 6. Indemnification of Directors and Officers.
Cayman Islands law does not limit the extent to which a company's articles of association may provide for indemnification of officers and directors, except to the extent any such provision may be held by the Cayman Islands courts to be contrary to public policy, such as to provide indemnification against civil fraud or the consequences of committing a crime. Our Articles provide that no director, alternate director or officer shall be liable to One and one Green Technologies. INC for any loss or damage in carrying out his functions unless that liability arises through the actual fraud or willful default of such director or officer.

The underwriting agreement, the form of which will be filed as Exhibit 1.1 to this registration statement, provides for indemnification by the underwriters of us and our officers and directors for certain liabilities, including liabilities arising under the Securities Act, but only to the extent that such liabilities are caused by information relating to the underwriters furnished to us in writing expressly for use in this registration statement and certain other disclosure documents.

Insofar as indemnification for liabilities arising under the Securities Act may be permitted to directors, officers or persons controlling us pursuant to the foregoing provisions, we have been informed that in the opinion of the SEC such indemnification is against public policy as expressed in the Securities Act and is therefore unenforceable.

#### Item 7. Recent Sales of Unregistered Securities.
Set forth below is information regarding ordinary shares issued by us during the last three years. None of the below described transactions involved any underwriters, underwriting discounts and commissions or commissions, or any public offering.

One and one Green Technologies. INC was incorporated on April 17, 2024. In connection with the incorporation, on April 17, 2024, One and one Cayman issued shares of a nominal or par value of US$0.0001 to Osiris International Cayman Limited, which was transferred to One and one International Limited on April 17, 2024. In addition to that, On April 17, 2024, One and one Cayman issued 20,000,000 shares in total for consideration of USD$2000 to its investors. On December 25, 2024, One and one Cayman issued 32,000,000 shares in total for consideration of USD$3200 to its investors.

We believe that the offers, sales and issuances of the securities described in the preceding paragraph were exempt from registration either (a) under Section 4(a)(2) of the Securities Act and the rules and regulations promulgated thereunder, in that the transactions were between an issuer and sophisticated investors or members of its senior executive management and did not involve any public offering within the meaning of Section 4(a)(2), (b) under Regulation S promulgated under the Securities Act in that offers, sales and issuances were not made to persons in the United States and no directed selling efforts were made in the United States, or (c) under Rule 701 promulgated under the Securities Act in that the transactions were underwritten compensatory benefit plans or written compensatory contracts.

#### Item 8. Exhibits.
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(a) The following documents are filed as part of this registration statement:

---

| | |
|:---|:---|
|  **Exhibit No.** | **Description** |
|  1.1† | [Form of Underwriting Agreement](http://www.sec.gov/Archives/edgar/data/2034723/000121390025079833/ea020810310ex1-1_oneandone.htm) |
|  3.1†  | [Amended and Restated Memorandum and Articles of Association](http://www.sec.gov/Archives/edgar/data/2034723/000121390025004967/ea020810305ex3-1_oneand.htm) |
|  5.1\* | [Opinion of Maples and Calder (Hong Kong) LLP, Company's Cayman Islands counsel as to the validity of the Class A Ordinary Shares](ea020810312ex5-1_oneandone.htm) |
|  8.1† | [Opinion of GP Angeles and Associates law Office, Philippines counsel to the Registrant, regarding certain Philippines legal and tax matters (included in Exhibit 99.7)](http://www.sec.gov/Archives/edgar/data/2034723/000121390025079833/ea020810310ex99-7_oneandone.htm) |
|  8.2\* | [Opinion of Maples and Calder (Hong Kong) LLP, Company's Cayman Islands counsel as to Cayman Islands tax matters (included in Exhibit 5.1)](ea020810312ex5-1_oneandone.htm) |
|  10.1† | [Employment Agreement, by and between the Registrant and Caifen Yan](http://www.sec.gov/Archives/edgar/data/2034723/000121390025004967/ea020810305ex10-1_oneand.htm) |
|  10.2† | [Employment Agreement, by and between the Registrant and Huajun Yan](http://www.sec.gov/Archives/edgar/data/2034723/000121390025004967/ea020810305ex10-2_oneand.htm) |
|  10.3† | [Employment Agreement by and between the Registrant and Chun Kit Wong](http://www.sec.gov/Archives/edgar/data/2034723/000121390025079833/ea020810310ex10-3_oneandone.htm) |
|  10.4† | [Lease Agreement for Barangay Malibay San Rafael Bulacan](http://www.sec.gov/Archives/edgar/data/2034723/000121390025062908/ea020810308ex10-4_oneand.htm) |
|  10.5† | [Lease Agreement for 1<sup>st</sup> DILIMAN, San Rafael, Bulacan](http://www.sec.gov/Archives/edgar/data/2034723/000121390025062908/ea020810308ex10-5_oneand.htm) |

---

---

| | |
|:---|:---|
|  **Exhibit No.** | **Description** |
|  10.6† | [Form of Independent Non-Executive Director Offer Letter](http://www.sec.gov/Archives/edgar/data/2034723/000121390025062908/ea020810308ex10-6_oneand.htm) |
|  14.1† | [Code of Business Conduct and Ethics](http://www.sec.gov/Archives/edgar/data/2034723/000121390025062908/ea020810308ex14-1_oneand.htm) |
|  14.2† | [Executive Compensation Recovery Policy](http://www.sec.gov/Archives/edgar/data/2034723/000121390025062908/ea020810308ex14-2_oneand.htm) |
|  14.3† | [Insider Trading Policy](http://www.sec.gov/Archives/edgar/data/2034723/000121390025004967/ea020810305ex19-1_oneand.htm) |
|  21.1†  | [List of Subsidiaries](http://www.sec.gov/Archives/edgar/data/2034723/000121390025004967/ea020810305ex21-1_oneand.htm) |
|  23.1\* | [Consent of HTL International, LLC](ea020810312ex23-1_oneandone.htm) |
|  23.2\* | [Consent of Maples and Calder (Hong Kong) LLP (included in Exhibit 5.1)](ea020810312ex5-1_oneandone.htm) |
|  23.3† | [Consent of G.P. Angeles & Association LLP (included in Exhibit 99.7)](http://www.sec.gov/Archives/edgar/data/2034723/000121390025079833/ea020810310ex99-7_oneandone.htm) |
|  24.1†  | [Power of Attorney (included on signature page to the registration statement)](http://www.sec.gov/Archives/edgar/data/2034723/000121390025004967/ea0208103-05.htm#T5001) |
|  99.1†  | [Charter of the Audit Committee](http://www.sec.gov/Archives/edgar/data/2034723/000121390025004967/ea020810305ex99-1_oneand.htm) |
|  99.2†  | [Charter of the Compensation Committee](http://www.sec.gov/Archives/edgar/data/2034723/000121390025004967/ea020810305ex99-2_oneand.htm) |
|  99.3†  | [Charter of the Nominating Committee](http://www.sec.gov/Archives/edgar/data/2034723/000121390025004967/ea020810305ex99-3_oneand.htm) |
|  99.4† | [Consent of Director Nominee, Han (Francis) Zhang](http://www.sec.gov/Archives/edgar/data/2034723/000121390025062908/ea020810308ex99-4_oneand.htm) |
|  99.5† | [Consent of Director Nominee, Samuel U. Lee](http://www.sec.gov/Archives/edgar/data/2034723/000121390025062908/ea020810308ex99-5_oneand.htm) |
|  99.6† | [Consent of Director Nominee, Jehn Ming Lim](http://www.sec.gov/Archives/edgar/data/2034723/000121390025062908/ea020810308ex99-6_oneand.htm) |
|  99.7† | [Opinion of GP Angeles and Associates law Office, Philippines counsel to the Registrant, regarding certain Philippines legal and tax matters](http://www.sec.gov/Archives/edgar/data/2034723/000121390025079833/ea020810310ex99-7_oneandone.htm) |
|  107† | [Calculation of Registration Fee](http://www.sec.gov/Archives/edgar/data/2034723/000121390025052277/ea020810307ex-fee_oneand.htm) |

---

____________

\* Filed herein

† Previously filed

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(b) Financial Statement Schedules

None.

#### Item 9. Undertakings
The undersigned registrant hereby undertakes to provide to the underwriters at the closing specified in the underwriting agreements, certificates in such denominations and registered in such names as required by the underwriters to permit prompt delivery to each purchaser.

The undersigned registrant hereby undertakes:

1) To file, during any period in which offers or sales are being made, a post-effective amendment to this registration statement:

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(i) To include any prospectus required by section 10(a)(3) of the Securities Act of 1933;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(ii) To reflect in the prospectus any facts or events arising after the effective date of the registration statement (or the most recent post-effective amendment thereof) which, individually or in the aggregate, represent a fundamental change in the information set forth in the registration statement. Notwithstanding the foregoing, any increase or decrease in volume of securities offered (if the total dollar value of securities offered would not exceed that which was registered) and any deviation from the low or high end of the estimated maximum offering range may be reflected in the form of prospectus filed with the Commission pursuant to Rule 424(b) (§230.424(b) of this chapter) if, in the aggregate, the changes in volume and price represent no more than 20% change in the maximum aggregate offering price set forth in the "Calculation of Registration Fee" table in the effective registration statement.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(iii) To include any material information with respect to the plan of distribution not previously disclosed in the registration statement or any material change to such information in the registration statement.

2) That, for the purpose of determining any liability under the Securities Act of 1933, each such post-effective amendment shall be deemed to be a new registration statement relating to the securities offered therein, and the offering of such securities at that time shall be deemed to be the initial bona fide offering thereof.

3) To remove from registration by means of a post-effective amendment any of the securities being registered which remain unsold at the termination of the offering.

4) To file a post-effective amendment to the registration statement to include any financial statements required by Item 8.A of Form 20-F at the start of any delayed offering or throughout a continuous offering. Financial statements and information otherwise required by Section 10(a)(3) of the Securities Act need not be furnished, provided that the registrant includes in the prospectus, by means of a post-effective amendment, financial statements required pursuant to this paragraph and other information necessary to ensure that all other information in the prospectus is at least as current as the date of those financial statements.

5) That, for the purpose of determining any liability under the Securities Act of 1933 to any purchaser, each prospectus filed by the Registrant pursuant to Rule 424(b) as part of a registration statement relating to an offering, other than registration statements relying on Rule 430B or other than prospectuses filed in reliance on Rule 430A, shall be deemed to be part of and included in the registration statement as of the date it is first used after effectiveness. Provided, however, that no statement made in a registration statement or prospectus that is part of the registration statement or made in a document incorporated or deemed incorporated by reference into the registration statement or prospectus that is part of the registration statement will, as to a purchaser with a time of contract of sale prior to such first use, supersede or modify any statement that was made in the registration statement or prospectus that was part of the registration statement or made in any such document immediately prior to such date of first use;

6) That, for the purpose of determining liability of the registrant under the Securities Act to any purchaser in the initial distribution of the securities:

The undersigned registrant undertakes that in a primary offering of securities of the undersigned registrant pursuant to this registration statement, regardless of the placement method used to sell the securities to the purchaser, if the securities are offered or sold to such purchaser by means of any of the following communications, the undersigned registrant will be a seller to the purchaser and will be considered to offer or sell such securities to such purchaser:

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(i) Any preliminary prospectus or prospectus of the undersigned registrant relating to the offering required to be filed pursuant to Rule 424.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(ii) Any free writing prospectus relating to the offering prepared by or on behalf of the undersigned registrant or used or referred to by the undersigned registrant;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(iii) The portion of any other free writing prospectus relating to the offering containing material information about the undersigned registrant or its securities provided by or on behalf of the undersigned registrant; and

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(iv) Any other communication that is an offer in the offering made by the undersigned registrant to the purchaser.

7) Insofar as indemnification for liabilities arising under the Securities Act of 1933 may be permitted to directors, officers and controlling persons of the registrant pursuant to the foregoing provisions, or otherwise, the registrant has been advised that in the opinion of the U.S. Securities and Exchange Commission such indemnification is against public policy as expressed in the Act and is, therefore, unenforceable. In the event that a claim for indemnification against such liabilities (other than the payment by the registrant of expenses incurred or paid by a director, officer or controlling person of the registrant in the successful defense of any action, suit or proceeding) is asserted by such director, officer or controlling person in connection with the securities being registered, the registrant will, unless in the opinion of its counsel the matter has been settled by controlling precedent, submit to a court of appropriate jurisdiction the question whether such indemnification by it is against public policy as expressed in the Act and will be governed by the final adjudication of such issue.

8) That, for purposes of determining any liability under the Securities Act of 1933, (i) the information omitted from the form of prospectus filed as part of this registration statement in reliance upon Rule 430A and contained in a form of prospectus filed by the registrant pursuant to Rule 424(b) (1) or (4) or 497(h) under the Securities Act shall be deemed to be part of this registration statement as of the time it was declared effective; and (ii) each post-effective amendment that contains a form of prospectus shall be deemed to be a new registration statement relating to the securities offered therein, and the offering of such securities at that time shall be deemed to be the initial bona fide offering thereof.

#### SIGNATURES
Pursuant to the requirements of the Securities Act of 1933, the registrant certifies that it has reasonable grounds to believe that it meets all of the requirements for filing on Form F-1 and has duly caused this registration statement to be signed on its behalf by the undersigned, thereunto duly authorized, in the Philippines, on September 2, 2025.

---

| | |
|:---|:---|
|  One and one Green Technologies. INC  | One and one Green Technologies. INC  |
|  By: | /s/ Caifen Yan |
|  Name: | Caifen Yan |
|  Title: | Chief Executive Officer, Chairman of the Board and Director |

---

Pursuant to the requirements of the Securities Act of 1933, this Registration Statement has been signed by the following persons in the capacities and on the dates indicated.

---

| | | |
|:---|:---|:---|
|  **Name** | **Position** | **Date** |
|  /s/ Caifen Yan | Chief Executive Officer, <br>Chairman of the Board and Director (Principal Executive Officer) | September 2, 2025 |
|  Caifen Yan | Chief Executive Officer, <br>Chairman of the Board and Director (Principal Executive Officer) |  |
|  /s/ Chun Kit Wong | Chief Financial Officer | September 2, 2025 |
|  Chun Kit Wong | (Principal Financial and Accounting Officer) |  |
|  /s/ Huajun Yan | Chief Operating Officer and Director | September 2, 2025 |
|  Huajun Yan |  |  |

---

#### Authorized U.S. Representative
Pursuant to the Securities Act of 1933, as amended, the undersigned, the duly authorized representative in the United States of One and one Green Technologies. INC, has signed this registration statement in New York, on September 2, 2025.

---

| | |
|:---|:---|
|  Cogency Global Inc. | Cogency Global Inc. |
|  By: | /s/ Colleen A. De Vries |
|  Name: | Colleen A. De Vries |
|  Title: | Senior Vice President on behalf of Cogency Global Inc. |

---

## Exhibit 5.1

**Exhibit 5.1**

![](ex5-1_001.jpg)

---

| | |
|:---|:---|
| **Our** **ref** | JVZ/838813-000001/31104506v7 |

---

One and one Green Technologies. INC. <br> Osiris International Cayman Limited <br> Suite #4-210, Governors Square,

23 Lime Tree Bay Avenue

PO Box 32311, Grand Cayman KY1-1209 <br> Cayman Islands

2 September 2025

Dear Sirs and/or Madams

**One and one Green Technologies. INC**

We have acted as Cayman Islands legal advisers to One and one Green Technologies. INC (the "**Company**") in connection with the Company's registration statement on Form F-1, including all amendments or supplements thereto (the "**Registration Statement**"), filed with the Securities and Exchange Commission (the "**Commission**") under the U.S. Securities Act of 1933, as amended to date, relating to the offering (the "**Offering**") by the Company of the Company's 2,500,000 Class A Ordinary Shares (as defined in below) of par value US$0.0001 each; together with an underwriter's over-allotment option for a period of 30 days after the closing of the Offering for the underwriter to purchase additional Class A Ordinary Shares in the amount representing fifteen percent (15%) of the Public Offering Shares sold in the Offering (the **Over-allotment Shares,** collectively, the "**Shares**").

We are furnishing this opinion as Exhibits 5.1, 8.2 and 23.2 to the Registration Statement.

1 Documents Reviewed

For the purposes of this opinion, we have reviewed only originals, copies or final drafts of the following documents:

1.1 The certificate of incorporation of the Company dated 17 April 2024.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.2 The amended and restated memorandum and articles of association of the company adopted by special resolution
passed on 27 December 2024 (the "**Memorandum and Articles** ").

![](ex5-1_002.jpg)

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.3 The written resolutions of the directors of the Company dated 13 August 2025 (the "**Board Resolutions** ").

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.4 The written resolutions of the shareholders of the Company dated 27 December 2024 (the "**Shareholders** **' Resolutions** ").

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.5 A certificate from a director of the Company, a copy of which is attached hereto (the "**Director** **' s Certificate** ").

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.6 A certificate of good standing dated 8 August 2025, issued by the Registrar of Companies in the Cayman
Islands (the "**Certificate of Good Standing** ").

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.7 The Registration Statement filed with the Commission on 15 August 2025.

---

| | |
|:---|:---|
| **2** | **Assumptions** |

---

The following opinions are given only as to, and based on, circumstances and matters of fact existing and known to us on the date of this opinion letter. These opinions only relate to the laws of the Cayman Islands which are in force on the date of this opinion letter. In giving these opinions we have relied (without further verification) upon the completeness and accuracy, as of the date of this opinion letter, of the Director's Certificate and the Certificate of Good Standing. We have also relied upon the following assumptions, which we have not independently verified:

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;2.1 Copies of documents, conformed copies or drafts of documents provided to us are true and complete copies
of, or in the final forms of, the originals.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;2.2 All signatures, initials and seals are genuine.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;2.3 There is nothing under any law (other than the law of the Cayman Islands), which would or might affect
the opinions set out below.

---

| | |
|:---|:---|
| **3** | **Opinion** |

---

Based upon the foregoing and subject to the qualifications set out below and having regard to such legal considerations as we deem relevant, we are of the opinion that:

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;3.1 The Company has been duly incorporated as an exempted company with limited liability and is validly existing
and in good standing with the Registrar of Companies under the laws of the Cayman Islands. The Company can sue and be sued in its own
name under the laws of the Cayman Islands.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;3.2 The authorised share capital of the Company is US$50,000 divided into 500,000,000 shares of a par value
of US$0.0001 each, comprising of (i) 489,796,040 Class A Ordinary Shares of a par value of US$0.0001 each (the "Class A Ordinary
Shares"), and (ii) 10,203,960 Class B ordinary shares of a par value of US$0.0001 each (the "" Class B Ordinary Shares).

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;3.3 The issue and allotment of the Shares have been duly authorised and when allotted, issued and paid for
as contemplated in the Registration Statement, the Shares will be legally issued and allotted, fully paid and non-assessable. As a matter
of Cayman law, a share is only issued when it has been entered in the register of members (shareholders).

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;3.4 The statements under the caption "Taxation", "Enforcement of Civil Liabilities"
and "Description of Share Capital and Constitution" in the prospectus forming part of the Registration Statement, to the extent
that they constitute statements of Cayman Islands law, are accurate in all material respects and that such statements constitute our opinion.

---

| | |
|:---|:---|
| **4** | **Qualifications** |

---

In this opinion the phrase "non-assessable" means, with respect to shares in the Company, that a shareholder shall not, solely by virtue of its status as a shareholder, be liable for additional assessments or calls on shares by the Company or its creditors (except in exceptional circumstances, such as involving fraud, the establishment of an agency relationship or an illegal or improper purpose or other circumstances in which a court may be prepared to pierce or lift the corporate veil).

Except as specifically stated herein, we make no comment with respect to any representations and warranties which may be made by or with respect to the Company in any of the documents or instruments cited in this opinion or otherwise with respect to the commercial terms of the transactions, which are the subject of this opinion.

We hereby consent to the filing of this opinion as an exhibit to the Registration Statement and to the reference to our name under the headings "Enforcement of Civil Liabilities", "Taxation" and "Legal Matters" and elsewhere in the prospectus included in the Registration Statement. In giving such consent, we do not thereby admit that we come within the category of persons whose consent is required under Section 7 of the U.S. Securities Act of 1933, as amended, or the Rules and Regulations of the Commission thereunder.

Yours faithfully

/s/ Maples and Calder (Hong Kong) LLP

Maples and Calder (Hong Kong) LLP

## Exhibit 23.1

**Exhibit 23.1**

CONSENT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM

We hereby consent to the inclusion in this Amendment No. 4 to Registration Statement on Form F-1 of One and one Green Technologies. INC (the "Company") of our report dated June 6, 2025, relating to our audits of the consolidated financial statements of the Company as of and for the years ended December 31, 2024 and 2023, appearing in the Prospectus, which is part of this Registration Statement.

We also consent to the reference of our Firm under the caption "Experts" in this Registration Statement.

/s/ HTL International, LLC

HTL International, LLC

Houston, Texas

September 2, 2025