Major Operating Data of the First Half of 2024

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.Sinopec Shanghai Petrochemical Company Limited (A joint stock limited company incorporated in the People’s Republic of China) (Stock Code: 00338) Major Operating Data of the First Half of 2024 According to Rule 15 of the Guidelines of the Shanghai Stock Exchange for Self-regulatory Guidelines for Listed Companies No.3 – Industry Information Disclosure No.13 – Chemical Industry Sinopec Shanghai Petrochemical Company Limited (the “Company” together with its subsidiaries the “Group”) hereby announces the major operating data for the six months ended 30 June 2024 as follows: I. MAJOR OPERATING DATA OF THE FIRST HALF OF 2024 Production volume Sales volume Sales revenue Product (10000 tons) (10000 tons) (RMB1000) Refined oil products Diesel 138.67 136.16 9431221 Gasoline 166.57 166.67 14524526 Jet Fuel Note 1 123.23 72.10 4097604 Chemical products PX Note 2 34.87 34.98 2610386 Benzene Note 1 17.56 17.65 1325127 Ethylene Glycol Note 2 0 0.05 1890 Ethylene Oxide 0 0 0 Ethylene Note 2 21.98 – – PE 27.12 26.15 2083403 PP 20.17 20.03 1515153 Acrylics 1.24 1.14 149797 - 1 -Note 1: Sales volume excluded materials processed on a sub-contract basis.Note 2: Part of the difference between the production volume and sales volume is for internal use.The above data for sales volume and sales revenue do not include the data for the Group’s trading of petrochemical products.II. CHANGE IN PRICES OF MAJOR PRODUCTS AND RAW MATERIALS IN THE FIRST HALF OF 2024 Unit: RMB/ton The average price in The average price in Compared with the Product the first half of 2024 the first half of 2023 Year-on-year Change previous quarter* Diesel 6927 6440 7.56% 6.58% Gasoline 8715 8272 5.35% 3.08% Jet Fuel 5683 5570 2.04% – 3.94% Ethylene – – – – PX 7461 7249 2.93% 1.85% Benzene 7508 6104 23.00% 9.16% Ethylene Glycol 3979 3655 8.85% – Ethylene Oxide – 5707 – – PE 7966 7529 5.80% 3.35% PP 7563 7278 3.93% 2.23% Acrylics 13165 15023 – 12.37% 0.53% The average The average processing cost in the processing cost in the Compared with the Raw material first half of 2024 first half of 2023 Year-on-year Change previous quarter* Crude oil 4382 4210 4.08% 4.19% * the number in the second quarter of 2024 compared with that in the first quarter of 2024 - 2 -III. MISCELLANEOUS The above-mentioned operating data were calculated based on the internal statistics of the Company and are intended to provide an overview of the production and operation of the Company to the investors on a timely basis. The operating data are unaudited and do not make any express or implied forecasts or guarantees in respect of the Company’s future operating conditions. Investors are advised to exercise caution when using such information.By Order of the Board Sinopec Shanghai Petrochemical Company Limited Liu Gang Joint Company Secretary Shanghai the PRC 11 July 2024 As at the date of this announcement the executive directors of the Company are Guo Xiaojun Guan Zemin Du Jun and Huang Xiangyu; the non-executive directors of the Company are Xie Zhenglin and Qin Zhaohui; and the independent non-executive directors of the Company are Tang Song Chen Haifeng Yang Jun Zhou Ying and Huang Jiangdong.