RAYA 6-K

UNITEDSTATES

SECURITIESAND EXCHANGE COMMISSION

Washington,D.C. 20549

FORM6-K

REPORTOF FOREIGN PRIVATE ISSUERPURSUANT TO RULE 13a-16 OR 15d-16UNDER THE SECURITIES EXCHANGE ACT OF 1934

Forthe month of June 2026

CommissionFile Number: 001-41568

ERAYAKPower Solution Group Inc.

No.528, 4th Avenue

BinhaiIndustrial Park

Wenzhou,Zhejiang Province

People’sRepublic of China 325025

+86-577-86829999

(Addressof principal executive offices)

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

Form 20-F ☒ Form 40-F ☐

On May 28, 2026, Erayak Power Solution Group Inc (the “Company”), a Cayman Islands exempted company, consummated a share subscription (the “Share Subscription”) with Erayak International Limited, a British Virgin Islands company. Under the terms of the Share Subscription, the Erayak International Limited purchased 45,000 Class B ordinary shares from the Company at a consideration of $3.09 per share, which is the closing pricing on May 27, 2026. A copy of the Share Subscription letter is attached hereto as Exhibit 10.1.

On June 4, 2026, Erayak International Limited was issued 45,000 Class B ordinary shares of the Company, representing approximately 49.9% of the total issued and outstanding ordinary shares.

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SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned, thereunto duly authorized.

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ExhibitIndex

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Exhibit 10.1

Subscription Letter

28 May 2026

Board of Directors

ERAYAKPower Solution Group Inc.

4th Floor, Harbour Place

103 South Church Street

P.O. Box 10240, Grand Cayman

KY1-1002, Cayman Islands

Dear Sir or Madam

Subscription for Class B Ordinary Shares in Erayak Power Solution Group Inc

We, ERAYAK International Limited of Craigmuir Chambers, Road Town, Tortola, VG1110, British Virgin Islands, hereby subscribe for 45,000 Class B Ordinary Shares of par value of US$0.22 each (the Shares) in ERAYAK Power Solution Group Inc., a Cayman Islands exempted company with company number 352596 (the Company) for a total consideration of US$139,050.

The Shares shall be issued subject to the memorandum and articles of association of the Company, and shall not be subject to any additional designations, powers, preferences, rights, qualifications or limitations. The Shares shall rank pari passu in all respect with Class B Ordinary Shares of the Company already in issue.

This letter is governed by Cayman Islands law, and the Cayman Islands courts shall have jurisdiction to resolve any disputes relating to this letter.

[Signaturepage to follow]

Yours faithfully

[Signature page to subscription letter]