Sinopec Oilfield Service Corporation announced at its AGM held on June 12, 2024, Mr. Wu Baizhi, Mr. Zhao Jinhai, Ms. Zhang Lili, Mr. Xu Keyu, Mr. Zheng Weijun, Mr. Wang Pengcheng and Ms. Liu Jiangning were elected as directors of the Company. The Board also announced that Mr. Chen Xikun, Mr. Fan Zhonghai, Mr. Wei Ran, Mr. Zhou Meiyun, Mr. Chen Weidong and Mr. Dong Xiucheng, the Directors, ceased to be Directors due to expiry of their terms of appointment, effective from 12 June 2024. The first meeting of the 11th session of the Board was held on 12 June 2024.

Pursuant to the resolutions of the Board Meeting, the Board announce that: Mr. Wu Baizhi was appointed as the Chairman of the Board with a term of three years commencing from 12 June 2024. The members of the board committees are as follows: Strategy Committee: Chief Officer: Mr. Wu Baizhi; Members: Mr. Zhang Jiankuo, Mr. Zhao Jinhai, Mr. Du Kun, and Mr. Wang Pengcheng. Nomination Committee: Chief Officer: Mr. Wang Pengcheng; Members: Mr. Wu Baizhi, Mr. Zheng Weijun and Ms. Liu Jiangning.

Audit Committee: Chief Officer: Mr. Zheng Weijun; Members: Ms. Zhang Lili, Mr. Wang Pengcheng and Ms. Liu Jiangning. Remuneration Committee: Chief Officer: Ms. Liu Jiangning; Members: Mr. Du Kun, Mr. Zheng Weijun and Mr. Wang Pengcheng. Mr. Zhang Jiankuo will continue to serve as the General Manager of the Company; Mr. Zhang Congbang, Mr. Sun Binxiang will continue to serve as the Deputy General Manager of the Company; Mr. Cheng Zhongyi will continue to serve as the Chief Financial Officer, Secretary to the Board and General Legal Counsel of the Company, each with a term of three years commencing from 12 June 2024.

Mr. Zhang Jiankuo and Mr. Shen Zehong were appointed as the authorized representatives of the Company, with a term of three years commencing from 12 June 2024. Mr. Shen Zehong will continue to serve as the securities affairs representative and the company secretary of the Company, with a term of three years commencing from 12 June 2024. Mr. Zhang Zonglin, aged 59, is currently an executive director and secretary of the Party Committee of Sinopec Shengli Oil Engineering Company Limited.

Mr. Zhang is a professor-level senior engineer with a doctoral degree. Mr. Zhang joined Shengli Petroleum Administrative Bureau of China Petrochemical Corporation in 1984 and has served as deputy director of the Development Management Center of Sinopec Shengli Oilfield Co. Ltd., deputy director and director of the Development Division (Reservoir Operation and Management Office) of Shengli Oilfield Branch, director of Binnan Oil Extraction Plant of Shengli Oilfield Branch, and deputy chief geologist of Shengli Petroleum Administrative Bureau, consecutively; in January 2017, he was appointed as Deputy General Manager of Sinopec Shengli Oilfield Branch Company; in January 2022, he was appointed as General Manager and Deputy Secretary of the Party Committee of Sinopec Shengli Oil Engineering Company Limited; from September 2023, he has served as an executive director and secretary of the Party Committee of Sinopec Shengli Petroleum Engineering Company Limited.

Mr. Zhang Bailing, aged 59, is currently Employee Representative Supervisor. Mr. Zhang is a professor-level senior engineer with a doctoral degree. Mr. Zhang joined Sinopec Group Southwest Oil and Gas Branch in 1990 and has successively served as the deputy director and chief engineer of the West Sichuan production and transportation department, the director of the dispatching department, the director of the production operation department, the director of the West Sichuan Gas Production Plant, and the deputy chief engineer of Southwest Oil and Gas Branch; From August 2012 to November 2020, he served as the deputy general manager of Sinopec Southwest Oil and Gas Branch; in March 2017, he served as the secretary of the Party Committee of Sinopec Southwest Petroleum Engineering Co.

Ltd.; in August 2017, he served as secretary of the Party Committee and deputy general manager of Sinopec Southwest Petroleum Engineering Co. Ltd.; in May 2020, he served as the executive director and secretary of the Party Committee of Sinopec Southwest Petroleum Engineering Co. Ltd.; from November 2020, he has served as executive director and secretary of the Party Committee of Sinopec Zhongyuan Oil Engineering Company Limited; from February 2021, he has served as the Employee Representative Supervisor.

Mr. Wang Zhonghong, aged 56, is currently an executive director and secretary of the Party Committee of Sinopec Oil Engineering and Construction Corporation. Mr. Wang is a professor-level senior engineer with a master's degree. Mr. Wang joined Jianghan Petroleum Administrative Bureau of Sinopec Group in 1988, and has served as chief engineer, deputy director and executive deputy director (at the department level) of the Oil Construction Division of Jianghan Petroleum Administrative Bureau, deputy manager of the project management department of Sinopec International Petroleum Service Corporation, deputy manager of the Brazilian subsidiary (at the department level), consecutively; in November 2010, he was appointed as the deputy general manager (at the deputy bureau level) of Sinopec Group Brazil Co., Ltd; in March 2015, he was appointed as an deputy general manager of Sinopec Oil Engineering and Construction Corporation (deputy position of larger enterprise); in November 2020, he was appointed as the general manager and deputy secretary of the Party Committee of Sinopec Oil Engineering and Construction Corporation; from December 2023, he has served as an executive director and secretary of the Party Committee of Sinopec Oil Engineering and Construction Corporation.