Aluminum of China : SUPPLEMENTAL NOTICE OF 2017 ANNUAL GENERAL MEETING

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SUPPLEMENTAL NOTICE OF 2017 ANNUAL GENERAL MEETING

References are made to the notice (the "Notice") and the circular (the "Circular") of 2017 Annual General Meeting of Aluminum Corporation of China Limited* (the "Company") dated 4 May 2018, which set out the venue of the 2017 Annual General Meeting of the Company (the "AGM") originally scheduled to be convened on Tuesday, 19 June 2018 and contain the details of the resolutions to be proposed at the AGM for the consideration and approval of the shareholders of the Company (the "Shareholders").

Pursuant to the provisions of the Articles of Association of the Company, when a general meeting is held, the Shareholders who individually or together hold more than 3% of the Shares of the Company are entitled to put forward extraordinary proposals to the Company. On 8 June 2018, Aluminum Corporation of China* ( ʕ਷቙ุ ණྠϞࠢʮ̡ ), the controlling shareholder of the Company, who directly holds 32.81% of the Shares of the Company as at the date of this supplemental notice, put forward an extraordinary proposal and submitted it in writing to the convener of the AGM. According to the provisions of relevant laws and regulations and the Articles of Association of the Company, the abovementioned extraordinary proposal will be submitted at the AGM of the Company for consideration.

SUPPLEMENTAL NOTICE IS HEREBY GIVEN that the AGM, which will be convened 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 Tuesday, 26 June 2018, will consider, and if thought fit, pass the resolutions set out in the Notice as well as the following newly-added resolution proposed to the board of directors of the Company (the "Board") by Aluminum Corporation of China* ( ʕ਷቙ุණྠ Ϟࠢʮ̡ ), the controlling shareholder of the Company (unless the context requires otherwise, terms used in this supplemental notice have the same meanings as defined in the Circular):

ORDINARY RESOLUTION

1. To consider and approve the resolution in relation to the joint development of the Boffa Project by the Group and the Republic of Guinea, the grant of the Option for Additional Equity Participation and the entitlement of the Guinean Party to exercise the Option for Additional Equity Participation under the Mining Convention.

By order of the Board

Aluminum Corporation of China Limited*

Zhang Zhankui

Company Secretary

Beijing, the PRC

11 June 2018

Notes:

(a) A supplemental circular of the AGM detailing the above resolution has been dispatched to the Shareholders on 11 June 2018.

(b) This supplemental notice is enclosed with a revised form of proxy (the "Revised Form of Proxy") which sets out the abovementioned resolution.

IMPORTANT NOTICE: The Revised Form of Proxy shall supersede the form of proxy enclosed with the notice and the circular of the Company dated 4 May 2018 in relation to the AGM (the "Original Form of Proxy") and has been dispatched to the Shareholders. Shareholders who have completed and returned the Original Form of Proxy should note that the Original Form of Proxy is no longer applicable to the AGM.

Shareholders who intend to appoint a proxy to attend the AGM and vote on the resolution set out in this supplemental notice are requested to complete and return the Revised Form of Proxy in accordance with the instructions printed thereon not less than 24 hours before the time appointed for the holding of the AGM or any adjournment thereof. Completion and return of the Revised Form of Proxy will not prevent you from attending and voting in person at the AGM or any adjournment thereof if you so wish.

(c) For particulars of other resolutions to be considered at the AGM, eligibility for attending the

AGM, registration procedures for attending the AGM, and closure of register of members and other matters regarding the AGM, please refer to the notice of the 2017 AGM of the Company dated 4 May 2018 as well as the announcement dated 8 June 2018 in relation to, among others, the postponement of the AGM.

As at the date of this announcement, the members of the Board comprise Mr. Yu Dehui, Mr. Lu Dongliang and Mr. Jiang Yinggang (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