Sinopec Engineering Group Co Ltd. — Proxy Solicitation & Information Statement 2021

Mar 21, 2021

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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)

Proxy Form for the H Shares Class Meeting

Theto thisnumberproxyofformH Shares [(Note][1)] relating

I/We [(Note][2)] of

being the holder(s) of

H Share(s) [(Note][3)] of RMB1.00 each in the capital of SINOPEC Engineering (Group) Co., Ltd.

(the “ Company ”) now appoint [(Note][4)]

Tel. No.:for

) / the chairman of the”) meetingbe asonmyMonday,(our) myMonday,(our) (our) proxy10 to attend2021

(I.D.and voteNo.:for me (us) as hereunder at the first class meetingTel. No.:for H Shareholders for the year 2021 (the “ H Shares ) / the Class chairman Meeting of the”) tomeetingbe heldasonmyMonday,(our) proxy10 Mayto attend2021 immediately after the annual general meeting of the Company for the year 2020 and the first class meeting for Domestic Shareholders for the year 2021 to be convened and held on the same date and at the same place at Conference Room 201, Building 8, Shenggujiayuan, Shenggu Middle Road, Chaoyang District, Beijing, the PRC for the purposes of considering and, if thought fit, passing the special resolution as set out in the Company’s Notice of H Shares Class Meeting dated 22 March 2021. In the absence of any instruction(s), the proxy may vote for or against the resolution at his/her own discretion. In this proxy form, unless the context otherwise requires, capitalised terms used herein shall have the same meanings as defined in the Company’s circular dated 22 March 2021.

Special Resolution For [(Note][5)] Against [(Note][5)] Abstain [(Note][5)] 1. To consider and approve the grant of a general mandate to the Board to repurchase Domestic Shares and/or H Shares

Date: Notes:

Signature(s):

(Note 6)

1. Please insert the number and type of share(s) registered under your name(s) relating to this proxy form. If no number is inserted, this proxy form will be deemed to relate to all of the shares in the capital of the Company registered under your name(s).

2. Please insert full name(s) (in Chinese or English) and address(es) as shown in the register of members in BLOCK LETTERS .

3. Please insert the number of shares registered under your name(s) and delete as appropriate. If no number is inserted, this proxy form will be deemed to relate to all of the shares in the capital of the Company registered under your name(s).

4. If any proxy other than the chairman of the H Shares Class Meeting is preferred, please delete the words “ the chairman of the meeting ” and insert the name and address of the proxy desired in the space provided. If this is left blank, the chairman of the H Shares Class Meeting will act as your proxy. A shareholder entitled to attend and vote at the H Shares Class Meeting may appoint one or more proxies to attend and vote on his/her/its behalf. Such proxies may only exercise their voting rights in a poll. A proxy needs not be a shareholder of the Company but must attend the H Shares Class Meeting in person to represent you. ANY ALTERATION MADE TO THIS PROXY FORM MUST BE SIGNED BY THE SIGNATORY .

5. indicateAttention:withIf youa “�wish” in theto voteappropriateFOR anyspaceresolution,under “Against”.please indicateIf youwithwisha to“�ABSTAIN” in the appropriatefrom votingspaceon anyunderresolution,“For”. If pleaseyou wishindicateto votewithAGAINSTa “�” in anythe resolution,appropriatepleasespace under “Abstain”, and your voting will be counted in the total number of votes cast in that resolution for the purpose of calculating the result of that resolution. In the absence of any such indication, the proxy will vote or abstain at his/her discretion. Any invalid vote or any waiver to vote shall be disregarded as voting rights for the purpose of calculating the result of that resolution.

6. This proxy form must be signed under hand by you or your attorney duly authorised in writing on your behalf. If the appointor is a legal person, this form must be signed under its common seal or under hand by any director(s) or agent(s) duly appointed by such legal person.

7. In the case of joint holders of shares, any one of such persons may vote at the H Shares Class Meeting, either personally or by proxy, in respect of such share as if he/she/it were solely entitled thereto; but if more than one of such joint holders are present at the meeting in person or by proxy, the vote of the person, whose name stands first in the register of members of the Company in respect of such share shall be accepted.

8. To be valid, the power of attorney or other authorisation document(s) which have been notarised, together with the completed proxy form, must be delivered to Computershare Hong Kong Investor Services Ltd. at 17M Floor, Hopewell Centre, 183 Queen’s Road East, Wan Chai, Hong Kong, not less than 24 hours before the time designated for holding the H Shares Class Meeting.

• For identification purposes only