Chengdu Gas Group Co., Ltd. Announces Resolutions of the 20th Meeting of the Third Board of Directors

Stock Code: 603053 Stock Name: Chengdu Gas Announcement No.: 2026-006

Chengdu Gas Group Co., Ltd.

Announcement of Resolutions of the 20th Meeting of the Third Board of Directors

The company’s board of directors and all directors guarantee that the content of this announcement is free from any false records, misleading statements, or major omissions, and assume legal responsibility for its authenticity, accuracy, and completeness.

1. Meeting convening details

Chengdu Gas Group Co., Ltd. (hereinafter referred to as “Chengdu Gas” or “the Company”) held the 20th meeting of the third board of directors (hereinafter referred to as “this meeting”) via telecommunication on March 18, 2026. The notice of the meeting was delivered on March 13, 2026, by written notice, phone, email, and other methods. The meeting was convened and presided over by Mr. Wang Binghao, the chairman of the company. A total of 13 directors were expected to attend, and all 13 directors attended. Senior management personnel of the company attended as non-voting participants. The convening procedures of this meeting complied with the “Company Law of the People’s Republic of China,” the Articles of Association of Chengdu Gas Group Co., Ltd., and the Rules of Procedure for the Board of Directors of Chengdu Gas Group Co., Ltd.

2. Review of the board meeting

The attending directors deliberated and voted by name to approve the following resolutions:

(1) Approval of the “Proposal on the Election of Members of the Nomination Committee and the Compensation and Assessment Committee of the Third Board of Directors”

The meeting agreed to elect Mr. Zhongxian Wang as a member of the Nomination Committee and the Compensation and Assessment Committee of the third board of directors of Chengdu Gas Group Co., Ltd., with a term starting from the date of approval by this board until the expiration of the third board’s term.

Voting result: 13 votes in favor, 0 against, 0 abstentions.

(2) Approval of the “Proposal on Signing the Supplementary Agreement to the Equity Transfer Agreement of the Chengtian Project”

The meeting agreed to sign the supplementary agreement to the equity transfer agreement of the Chengtian Project.

Voting result: 13 votes in favor, 0 against, 0 abstentions.

3. Documents for record

Resolutions of the 20th Meeting of the Third Board of Directors of Chengdu Gas

This announcement is hereby made.

Board of Directors of Chengdu Gas Group Co., Ltd.

March 19, 2026