China Aluminum International Engineering Corporation Limited announced that, due to job redesignation, Mr. FAN Guangsheng will cease to hold the office of chairman of the supervisory board (the "Supervisory Board") and employee representative supervisor of the Company since 29 January 2024. The Company convened the third meeting of the third session of the employee representation meeting on 29 January 2024, at which Ms. XIAO Hongmei was elected as an employee representative supervisor of the fourth session of the Supervisory Board of the Company. She will form the fourth session of the Supervisory Board of the Company together with two shareholder representative supervisors of the Company, with the term of office being effective from the date of this announcement until the expiry of the fourth session of the Supervisory Board of the Company.

Details of Ms. XIAO Hongmei, which are required to be disclosed pursuant to Rule 13.51(2) of the Rules Governing the Listing of Securities on The Stock Exchange of Hong Kong Limited (the "Listing Rules"), are set out as follows: Ms. XIAO Hongmei: aged 41, is currently the vice chairman of the trade union of the Company (part-time) and a welder in the manufacturing department of the steel structure plant in the Hanzhong branch (engaging in steel structure technology) of Ninth Metallurgical Construction Co. Ltd. She has served as a welder (blast furnace installation and construction) in Xinjiang Jinte Steel Structure Company, an installation arm of Ninth Metallurgical Construction Co. Ltd.), a welder (blast furnace construction and installation) in Yunnan Shuangyou Iron and Steel Co., Ltd, and an electric welder in the Seventh Engineering Branch of Ninth Metallurgical Construction Co.

Ltd. She was successively recognized as a model worker of Ninth Metallurgical Construction Co. Ltd., the top-ranked individual in the Shaanxi Vocational Skills Competition, Shaanxi May 1st Labor Medal, Shaanxi Technical Expert, Xianyang Labor Competition Pacesetter, National May 1st Labor Medal and Female Pacesetter of the Chinalco Group, etc. In addition, according to the resolution passed at the thirteenth meeting of the fourth session of Supervisory Board of the Company convened on 29 January 2024, Ms. LIN Ni, a current shareholder representative supervisor of the Company, was appointed as the chairman of the fourth session of the Supervisory Board of the Company, with the term of office being effective from the date of this announcement until the expiry of the fourth session of the Supervisory Board.

Details of Ms. LIN Ni, which are required to be disclosed pursuant to Rule 13.51(2) of the Listing Rules, are set out as follows: Ms. LIN Ni: aged 49, is currently a shareholder representative supervisor of the Company. Ms. LIN graduated from Shandong Economics University with a bachelor degree in economics majoring in accounting. She is a certified public accountant, a registered tax advisor, a registered asset appraiser and a senior auditor.

Ms. LIN has extensive experience in the fields including auditing and accounting. She has successively served as, amongst others, the head of the 2nd division of the audit department of Aluminum Corporation of China, and the head of the 1st division of the audit department, the deputy head of the audit department and the deputy general manager (in charge) of the audit department of Aluminum Corporation of China. Ms. LIN Ni currently serves as the general manager of the audit department of Aluminum Corporation of China, and is also a supervisor of Aluminum Corporation of China Limited (whose shares are listed on the Shanghai Stock Exchange and The Stock Exchange of Hong Kong Limited, a supervisor of Chinalco Assets Operation and Management Co.

Ltd. and a supervisor of Chinalco Materials Application Research Institute Co. Ltd.