On March 30, China Building Materials issued two announcements of personnel changes. Mr.
Cai Guobin has resigned as the Vice President of the Company with effect from March 30, 2026 due to job adjustment.

Ms. Pei Hongyan resigned as the secretary to the board of directors and joint company secretary of the Company due to work adjustment, and ceased to be the authorized representative of the Company under Rule 3.05 of the Rules Governing the Listing of Securities on The Stock Exchange of Hong Kong Limited with effect from 30 March 2026. Mr.
Chung Ming Fai (formerly the Joint Company Secretary of the Company) will continue to serve as the Company Secretary of the Company. Following the resignation of
Ms. Pei Hongyan, the Board announced the appointment of Ms. Miao Xiaoling as the secretary to the Board and the authorized representative of the fifth session of the Board of the Company with effect from 30 March 2026. Mr. Zhou Yuxian will continue to act as the other Authorized Representative.

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