The supervisory committee of Sinopec Oilfield Service Corporation announced that it has accepted the resignation of Mr. Chen Weiguo ("Mr. Chen") from his position as an employee representative supervisor of the Company due to change of work arrangement on 6 August 2020. According to the articles of association of the Company, Mr. Chen's resignation takes effect upon the submission of the resignation letter to the supervisory committee of the Company on 6 August 2020. Mr. Chen has confirmed that he has no disagreement with the board of directors and the supervisory committee of the Company, and there are no other matters in relation to his resignation that need to be brought to the attention of the shareholders of the Company.