The Board of Directors (the "Board") of Sinopec Oilfield Service Corporation announce that, in order to further improve corporate governance, the Company has established the Nomination Committee under the Board, with effect from 29 March 2022. The Board has appointed Mr. Dong Xiucheng, an independent non-executive director, as the chairman of the Nomination Committee, Mr. Chen Xikun, the chairman of the Board, and Mr. Chen Weidong and Mr. Zheng Weijun, independent non-executive directors, as members of the Nomination Committee. The above appointments are all effective from 29 March 2022.