上海石化：致股东的通知信函及变更申请表

（在中華人民共和國註冊成立之股份有限公司）

（Stock Code股份代號：00338）

NOTIFICATION LETTER 通 知 信 函

26 April 2024Dear Registered Shareholders,

Sinopec Shanghai Petrochemical Company Limited (the “Company”)– Notice of Publication of 2023 Annual Report, Circular, Notices and Proxy Forms for the 2023 Annual General Meeting and theFirst H Shareholders Class Meeting for 2024 (“Current Corporate Communications”)

The English and Chinese versions of the Current Corporate Communications are available on the Company’s website at www.spc.com.cn and theHKEXnews website of The Stock Exchange of Hong Kong Limited (the “HKEX”) at www.hkexnews.hk. You may access the Current CorporateCommunication by clicking “Investor Relations” on the home page of the Company’s website or browsing through the HKEXnews website. If youhave chosen to receive the Corporate Communications

(Note)in printed form, the selected language version(s) of the Current CorporateCommunications is enclosed.

Please note that you are entitled at any time to change your choice of language and means of receipt of all future Corporate Communications or toreceive the Current Corporate Communications by giving reasonable notice in writing or simply completing the Change Request Form on thereverse side and send it to the Company’s H share registrar, Hong Kong Registrars Limited (the “H Share Registrar”) by using the mailing label atthe bottom of the Change Request Form (a stamp is not needed if posted in Hong Kong). The address of H Share Registrar is 17M Floor, HopewellCentre, 183 Queen’s Road East, Wanchai, Hong Kong. You may also send an email with a scanned copy of the completed Change Request Form tospc.ecom@computershare.com.hk. The Change Request Form may also be downloaded from the Company’s website at www.spc.com.cn or the

HKEXnews website at www.hkexnews.hk.

Even if you have chosen (or are deemed to have consented) to read the website version of the Current Corporate Communications posted on theCompany’s website but for any reason you have difficulty in receiving or gaining access to such website version, the Company will promptly uponyour request send the Current Corporate Communications in printed form to you free of charge.

Should you have any queries relating to any of the above matters, please call the Company’s telephone hotline at (852) 2862 8688 during businesshours from 9:00 a.m. to 6:00 p.m. Monday to Friday, excluding public holidays or send an email to spc.ecom@computershare.com.hk.

By order of the BoardSinopec Shanghai Petrochemical Company Limited

Liu GangJoint Company Secretary

Note: Corporate Communications include but not limited to (a) the directors’ report, its annual accounts together with a copy of the auditors’ report and, where applicable, its summaryfinancial report; (b) the interim report and, where applicable, summary interim report; (c) a notice of meeting; (d) a listing document; (e) a circular; and (f) a proxy form.

各位登记股東：

中國石化上海石油化工股份有限公司（「本公司」）- 2023年年度報告、2023年年度股東周年大會及2024年第一次H股類別股東大會通函、通告及代表委任表格（「本次公司通訊文件」）之發佈通知

本次公司通訊文件的中、英文版本現已登載於本公司網站www.spc.com.cn 及香港聯合交易所有限公司(「香港交易所」)披露易網站www.hkexnews.hk，歡迎瀏覽。 閣下可在本公司網站主頁按「投資者關係」一項以下載或閲覽本次公司通訊文件，或在香港交易所披露易網站瀏覽該等文件。如 閣下已選擇收取公司通訊文件

(附註)

印刷本，本函附有 閣下選定的本次公司通訊文件語言版本。

敬請注意： 閣下如欲更改今後所有公司通訊文件之語言版本及收取方式，或欲收取本次公司通訊文件， 閣下有權在任何時間發出合理書面通知或簡單透過填寫背面的變更申請表，並使用變更申請表下方的郵寄標籤（如在香港投寄無需貼上郵票），寄回本公司H股股份過戶登記處，香港證券登記有限公司（「H股股份過戶登記處」），地址為香港灣仔皇后大道東183號合和中心17M樓。 閣下亦可把已填妥之變更申請表的掃描副本電郵到spc.ecom@computershare.com.hk。變更申請表亦可於本公司網站www.spc.com.cn 或香港交易所披露易網站www.hkexnews.hk 內下載。

閣下如已選擇（或被視為已同意）閲覽在本公司網站發佈的本次公司通訊文件網上版本，但因任何理由以致在收取或接收登載於本公司網站上的本次公司通訊文件出現困難，本公司將應 閣下要求立即向 閣下寄發本次公司通訊文件的印刷版本，費用全免。

倘 閣下對本函內容有任何疑問，請致電本公司電話熱線(852) 2862 8688，辦公時間為星期一至五（公眾假期除外）上午9時正至下午6時正或電郵至 spc.ecom@computershare.com.hk 。

承本公司董事會命中國石化上海石油化工股份有限公司

聯席公司秘書

劉剛2024年4月26日

附註：公司通訊文件包括但不限於：

(a)董事會報告、年度財務報表連同核數師報告及如適用，財務摘要報告；(b)中期報告及如適用，中期摘要報告；(c)會議通告；(d)上市文件；(e)通函；及(f)委任代表表格。

I/We have already received a printed copy of the Current Corporate Communications in Chinese and/or English or have chosen (or are deemed to have consented) toread the Current Corporate Communications posted on the Company’s website:

本人／我們已收取本次公司通訊文件之中文及／或英文印刷本或已選擇（或被視為已同意）閱覽 貴公司網站所登載之本次公司通訊文件：

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