Sinopec Engineering Group Co Ltd. — AGM Information 2022

May 6, 2022

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)

POSTPONEMENT OF ANNUAL GENERAL MEETING AND CLASS MEETINGS AND EXTENSION OF BOOK CLOSURE PERIOD

Reference is made to the notice of the annual general meeting for the year 2021 (the “ AGM ”) and closure of register of members dated 20 March 2022, notice of Domestic Shares Class Meeting dated 20 March 2022, notice of H Shares Class Meeting dated 20 March 2022 (the “ Notices ”) and the circular (the “ Circular ”) of the annual general meeting for the year 2021 dated 20 March 2022 of SINOPEC Engineering (Group) Co., Ltd. (the “ Company ”). Terms used in this announcement shall have the same meanings as those defined in the Notices and the Circular unless otherwise defined.

The board of directors of the Company (the “ Board ”) announces that given the relevant COVID-19 prevention and control requirements of the place where the Company is located and within the Company, the date of the AGM is rescheduled to be convened at 9:00 a.m. on Thursday, 26 May 2022, instead of 10:00 a.m. on Thursday, 12 May 2022 as originally scheduled. Accordingly, the date of the first class meetings for Domestic Shareholders and H Shareholders for the year 2022 is rescheduled to be convened immediately after the AGM to be convened and held at the same place on Thursday, 26 May 2022, instead of Thursday, 12 May 2022 as originally scheduled.

For determining the entitlement of shareholders of the Company (the “ Shareholders ”) to attend and vote at the AGM and the relevant class meetings, the register of members of the Company is originally scheduled to be closed from Tuesday, 12 April 2022 to Thursday, 12 May 2022 (both days inclusive). Due to the postponement of the AGM and the relevant class meetings, the register of members of the Company will now be closed from Tuesday, 12 April 2022 to Thursday, 26 May 2022 (both days inclusive), during which period no transfer of shares of the Company will be registered, in order to determine the entitlement of Shareholders to attend and vote at the AGM and the relevant class meetings. It remains unchanged for the AGM and the relevant class meetings that Shareholders whose names appear on the register of members of the Company on Tuesday, 12 April 2022 are entitled to attend and vote at the AGM and the relevant class meetings. Save as disclosed herein, the venue, attendance eligibility, the resolutions to be considered at and other relevant matters of the AGM and the relevant class meetings currently remain unchanged. For details, please refer to the Notices and the Circular.

• For identification purposes only

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The proxy forms for use at the AGM and the relevant class meetings sent together with the Notices and the Circular to the Shareholders (the “ Proxy Forms ”) will be valid proxy forms continuously applicable at the postponed AGM and the relevant class meetings. Shareholders who have yet to return the Proxy Forms are required to complete and return the Proxy Forms in accordance with the instructions printed thereon to the Company no less than 24 hours before the time appointed for the holding of the postponed AGM and the relevant class meetings or any adjournment thereof. For the avoidance of doubt, any Proxy Forms duly completed and returned in accordance with the instructions printed thereon remain valid for the postponed AGM and the relevant class meetings and the relevant Shareholders are not required to return another proxy form.

The reply slips for use at the AGM and the relevant class meetings sent together with the Notices to the Shareholders (the “ Reply Slips ”) will be valid reply slips continuously applicable at the postponed AGM and the relevant class meetings. For the avoidance of doubt, any Reply Slips duly completed and returned in accordance with the instructions printed thereon remain valid for the postponed AGM and the relevant class meetings and the relevant Shareholders are not required to return another reply slip.

By order of the Board SINOPEC ENGINEERING (GROUP) CO., LTD. Jia Yiqun

Chief Financial Officer, Secretary to the Board and Company Secretary

Beijing, the PRC 6 May 2022

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

• # Executive Directors

• Non-executive Directors

• + 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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