China National Building Material Company Limited received the written resignation of Ms. Zhan Yanjing ("Ms. Zhan") on 10 July 2023. Ms. Zhan shall resign from the position of a shareholder representative supervisor of the Company and the chairman of the Supervisory Committee due to retirement. In accordance with the Company Law of the People's Republic of China, the Articles of Association of the Company and relevant provisions, the resignation of Ms. Zhan did not result in the number of supervisors of the Company falling below the statutory minimum and will not affect the normal operation of the Supervisory Committee, thus the resignation of Ms. Zhan took effect upon the Supervisory Committee has been served with her resignation report.

The Company will complete the election of a supervisor to fill the vacancy pursuant to relevant provisions as soon as possible. Ms. Zhan has confirmed that she has no disagreement with the board of directors of the Company (the "Board") and the Supervisory Committee and has no other matters relating to her resignation that needs to be brought to the attention of the shareholders of the Company or the Stock Exchange of Hong Kong Limited. During her office as a shareholder representative supervisor of the Company and a chairman of the Supervisory Committee, with outstanding professional standards and extensive financial management experience, Ms. Zhan fully fulfilled her duties and obligations as a supervisor with diligence and dedication for promoting the high-quality development of the Company.

The Company, the Board and the Supervisory Committee would like to take this opportunity to express their sincere appreciation to Ms. Zhan for her valuable contribution to the Company during her tenure of office.