Sinopec Engineering Group Co Ltd. — AGM Information 2021

May 7, 2021

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.

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中石化煉化工程（集團）股份有限公司 SINOPEC Engineering (Group) Co., Ltd.* (a joint stock limited liability company incorporated in the People’s Republic of China)

(Stock Code: 2386)

ANNOUNCEMENT CHANGE OF TIME OF THE ANNUAL

GENERAL MEETING, DOMESTIC SHARES CLASS MEETING AND H SHARES CLASS MEETING TO BE HELD ON MAY 10, 2021

References are made to (i) the notice of the Annual General Meeting of SINOPEC Engineering (Group) Co., Ltd. (the “ Company ”) dated 22 March 2021, (ii) the notice of Domestic Shares Class Meeting of the Company dated 22 March 2021, (iii) the notice of H Shares Class Meeting of the Company dated 22 March 2021 (collectively “ Notices ”), (iv) the circular of the Company dated 22 March 2021 (the “ Circular ”), and (v) the proxy forms (collectively “ Proxy Forms ”) and replay slips for the AGM, the Domestic Shares Class Meeting and the H Shares Class Meeting. Unless indicated otherwise, capitalised terms used in this announcement shall have the same meanings as those defined in the Circular.

The board of directors of the Company (the “ Board ”) hereby announces that, due to internal administrative arrangements, the time of the AGM has changed from 10:00 a.m. to 3:00 p.m. on Monday, 10 May 2021, the Domestic Shares Class Meeting will be held immediately after the AGM on the same date, and the H Shares Class Meeting will be held immediately after the AGM and the Domestic Shares Class Meeting on the same date.

* For identification purposes only

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Except for the change of the time of the AGM, the Domestic Shares Class Meeting and the H Shares Class Meeting, all the information and contents contained in the Notices, the Proxy Forms, including the date, venue and contents of the resolutions, remain unchanged. The Proxy Forms remain valid and applicable to the AGM, the Domestic Shares Class Meeting and the H Shares Class Meeting. Shareholders of the Company who intend to attend the AGM, the Domestic Shares Class Meeting and the H Shares Class Meeting are advised to pay attention to the change of the time of the AGM, the Domestic Shares Class Meeting and the H Shares Class Meeting stated above.

By Order of the Board SINOPEC ENGINEERING (GROUP) CO., LTD. Jia Yiqun Chief Financial Officer, Company Secretary

Beijing, the PRC 7 May 2021

As at the date of this announcement, directors of the Company are: SUN Lili[#] , XIANG Wenwu[#] , JIANG Dejun[#] , WU Wenxin[*] , HUI Chiu Chung, Stephen[+] , JIN Yong[+] and YE Zheng[+] .

# Executive Directors

* Non-executive Director

+ Independent non-executive Directors

This announcement is available on the website of Hong Kong Exchanges and Clearing Limited (www.hkex.com.hk) and on the website of the Company (www.segroup.cn).

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