Aluminum of China : POSTPONEMENT OF EXTRAORDINARY GENERAL MEETING

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

(1) POSTPONEMENT OF EXTRAORDINARY GENERAL

MEETING;

(2) EXTENSION OF BOOK CLOSURE PERIOD; AND

(3) DESPATCH OF SUPPLEMENTAL CIRCULAR, SUPPLEMENTAL NOTICE AND REVISED FORM OF PROXY

References are made to the circular (the "Circular") dated 31 January 2019 of Aluminum Corporation of China Limited* (the "Company") and the notice of 2019 second extraordinary general meeting (the "EGM"), which was scheduled to be held at the Company's conference room, No. 62 North Xizhimen Street, Haidian District, Beijing, the People's Republic of China at 2:00 p.m. on Thursday, 28 March 2019 (the "Original Notice"). Unless otherwise indicated, capitalized terms used in this announcement shall have the same meanings as those defined in the Circular and the Original Notice.

• 1. POSTPONEMENT OF EXTRAORDINARY GENERAL MEETING

  The board of directors (the "Board") of the Company announces that, due to new resolution(s) to be submitted to the shareholders of the Company (the "Shareholders") for consideration at the EGM and additional time to be required by the Company for preparation of relevant resolution(s), the Company hereby postpones the EGM scheduled to be held at 2:00 p.m. on Thursday, 28 March 2019 to 2:00 p.m. on Monday, 29 April 2019.

  The venue of the EGM will remain unchanged at the Company's conference room, No. 62 North Xizhimen Street, Haidian District, Beijing, the People's Republic of China. The supplemental circular, containing, among others, the details of the new resolution(s) to be considered at the EGM will be despatched to

• the Shareholders on or before 10 April 2019.

• 2. EXTENSION OF BOOK CLOSURE PERIOD

  To determine the Shareholders who are entitled to attend and vote at the EGM, the H Share register of members of the Company has been closed from Tuesday, 26 February 2019 and the book closure period was scheduled to end on Thursday, 28 March 2019 (both days inclusive). Due to the postponement of the EGM, the book closure period of the H Share register of members of the Company will be changed into from Tuesday, 26 February 2019 to Monday, 29 April 2019 (both days inclusive) accordingly. Shareholders whose names appear on the H Share register of members at 4:30 p.m. on Monday, 25 February 2019 are entitled to attend and vote at the EGM after completing the registration procedures for attending the EGM.

  For H Shareholders, who intend to attend and vote at the EGM, all transfer documents accompanied by the relevant H Share certificates must have been delivered to the H Shares Registrar of the Company, Hong Kong Registrars Limited, at Shops 1712-1716, 17th Floor, Hopewell Centre, 183 Queen's Road East, Wanchai, Hong Kong no later than 4:30 p.m. on Monday, 25 February 2019 for registration.

• 3. DESPATCH OF SUPPLEMENTAL CIRCULAR, SUPPLEMENTAL NOTICE AND REVISED FORM OF PROXY

  The supplemental circular and supplemental notice of the EGM together with the revised form of proxy (the "Revised Form of Proxy"), containing, among others, the new resolution(s) to be considered, will be despatched to the Shareholders of the Company and published on the websites of the Company and the Hong Kong Stock Exchange on or before 10 April 2019.

• (1) Revised Form of Proxy

  Shareholders who have duly completed and returned the form of proxy enclosed with the Circular (the "Original Form of Proxy") shall note that, the Original Form of Proxy is no longer applicable to the EGM. To be valid, for A Shareholders, the Revised Form of Proxy, together with the notarially certified power of attorney or other document of authorization, must be delivered to the Company's Board Office at No. 62 North Xizhimen Street, Haidian District, Beijing, the People's Republic of China (Postal Code: 100082) not less than 24 hours before the time for the holding of the EGM or any adjournment thereof. In order to be valid, for H Shareholders, the above documents must be delivered to Hong Kong Registrars Limited at 17M Floor, Hopewell Centre, 183 Queen's Road East, Wanchai, Hong Kong within the same period.

• (2) Reply Slip

  The reply slip for the EGM, which was enclosed with the Circular, has been despatched to the Shareholders on 31 January 2019. Due to the postponement of the EGM, the deadline for returning the reply slip will be extended from Thursday, 7 March 2019 to Monday, 8 April 2019. Shareholders who have not returned their reply slips but intend to attend and vote at the EGM are required to complete their reply slips in accordance with the instructions printed thereon and deliver them to the Company's Board Office at No. 62 North Xizhimen Street, Haidian District, Beijing, the People's Republic of China (Postal Code: 100082) or the H Shares Registrar of the Company, Hong Kong Registrars Limited, at 17M Floor, Hopewell Centre, 183 Queen's Road East, Wanchai, Hong Kong, on or before the above date. If Shareholders have completed and returned the reply slip in accordance with the instructions printed thereon, no further action is required on the part of Shareholders.

By order of the Board

Aluminum Corporation of China Limited*

Wang Jun

Company Secretary

Beijing, the PRC

18 March 2019

As at the date of this announcement, the members of the Board comprise Mr. Lu Dongliang, Mr. Jiang Yinggang and Mr. Zhu Runzhou (Executive Directors); Mr. Ao Hong and Mr. Wang Jun (Non-executive Directors); Ms. Chen Lijie, Mr. Hu Shihai and Mr. Lie-A-Cheong Tai Chong, David (Independent Non-executive Directors).

* For identification purposes only