Company: YDDL
Filing Date: 2025-10-10
Form Type: 6-K
Source: 0001213900-25-098145
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Company: One & one Green Technologies. INC
Filing Date: 2025-10-10
Form: 6-K
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<div align='center'>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 October 2025

Commission File Number: 001-42898

One and one Green Technologies. INC

(Translation of registrant’s name into English)

1 stDiliman
San Rafael Bulacan, Philippines

(Address of principal executive office)</div>

Indicate by check mark whether the registrant
files or will file annual reports under cover of Form 20-F or Form 40-F.

<div align='center'>Form 20-F ☒ Form
40-F ☐</div>

On October 8, 2025, One and one Green Technologies.
INC, a Cayman Islands company (the “Company”), entered into an underwriting agreement with Cathay Securities, Inc (the “Representative”),
the representative of the underwriters named therein (the “Underwriters”), pursuant to which the Company agreed to sell to
the Underwriters in a firm commitment underwritten initial public offering (the “IPO”) an aggregate of 2,000,000 Class A ordinary
shares, with par value $0.0001 (the “Class A Ordinary Shares”), at an offering price of $5.00 per share. The Company has also
granted the Underwriters a 30-day option, exercisable by the Representative, to purchase up to an additional 300,000 Class A Ordinary
Shares to cover over-allotments, if any. The underwriting agreement is attached hereto as Exhibit 1.1 and is incorporated by reference
herein.

The Company completed the IPO pursuant to its
registration statement on Form F-1 (File No. 333-284375, “Form F-1”), originally filed with the U.S. Securities and Exchange
Commission (the “SEC”) on January 21, 2025, as amended (the “Registration Statement”). The Registration Statement
was declared effective by the SEC on September 29, 2025. The Class A Ordinary Shares were approved for listing on the Nasdaq Capital
Market and commenced trading under the ticker symbol “YDDL” on October 9, 2025. On October 10, 2025, the Company closed its