ANNOUNCEMENT - ADJUSTMENT TO THE NAME AND TERMS OF REFERENCE OF THE OCCUPATIONAL HEALTH & SAFETY AND ENVIRONMENT COMMITTEE OF THE BOARD

Hong Kong Exchanges and Clearing Limited and The Stock Exchange of Hong Kong Limited take no responsibility for the contents of this announcement make no representation as to its accuracy or completeness and expressly disclaim any liability whatsoever for any loss howsoever arising from or in reliance upon the whole or any part of the contents of this announcement.ANNOUNCEMENT ADJUSTMENT TO THE NAME AND TERMS OF REFERENCE OF THE OCCUPATIONAL HEALTH & SAFETY AND ENVIRONMENT COMMITTEE OF THE BOARD The board of directors (the “Board”) of Aluminum Corporation of China Limited* (the “Company”) hereby announces that on 3 June 2024 the Resolution on the Adjustment to the Special Committees under the Board of the Company and the Formulation of the Detailed Implementation Rules for the Special Committees under the Board of Aluminum Corporation of China Limited* was considered and approved at the 22nd meeting of the eighth session of the Board of the Company.The Board hereby announces that in order to further improve the corporate governance structure of the Company adapt to the needs of the strategic development of the Company enhance the environmental social and governance (the “ESG”) management level and sustainable development management capability of the Company and establish a robust ESG management system by integrating the sustainable development concept into the development strategy of the Company the Board has decided after research and taking into account the actual circumstances of the Company to approve to rename the Occupational Health & Safety and Environment Committee of the Board as the ESG Committee with additional ESG work responsibilities on the basis of existing responsibilities. According to the revised terms of reference the ESG Committee is responsible for coordinating the ESG-related work of the Company.The adjustment is made solely to the name and terms of reference of the Occupational Health & Safety and Environment Committee with no changes to the composition of the committee members. The adjustment shall take effect from the date of consideration and approval by the Board.– 1 –The Terms of Reference of the ESG Committee of the Board will be published on the websites of the Company and The Stock Exchange of Hong Kong Limited.By order of the Board Aluminum Corporation of China Limited* Ge Xiaolei Joint Company Secretary Beijing the PRC 3 June 2024 As at the date of this announcement the members of the Board comprise Mr. Dong Jianxiong Mr. Zhu Runzhou Mr. Ou Xiaowu and Mr. Jiang Tao (Executive Directors); Mr. Zhang Jilong and Mr. Chen Pengjun (Non-executive Directors); Mr. Qiu Guanzhou Mr. Yu Jinsong and Ms. Chan Yuen Sau Kelly (Independent Non-executive Directors).* For identification purposes only –2–