Sinopec Oilfield Service Corporation resolved to appoint Mr. Sun Bingxiang as the deputy general manager of the Company for a term commencing from August 3, 2021 to the date when the term of the tenth session of the Board expires. The biographical details of Mr. Sun are as follows: Mr. Sun Bingxiang, aged 50, is a senior engineer with a master degree. In April 2009, he was appointed as deputy head of general management division of the engineering and technology department of head-quarters of Sichuan-East China Gas Transmission Construction project. In February 2011, he served as deputy head of technology information division of petroleum engineering management department of China Petrochemical Corporation. In November 2012, he served as deputy manager of technology development department of Sinopec Oilfield Service Co. Ltd. In January 2018, he served as deputy manager of technology information department of the Company. In August 2018, he served as deputy manager of technology information department of the Company. In July 2020, he served as manager of technology information department of the Company. The company also announced resignation of Mr. Li Honghai as the Secretary to the Board of the Company on 3 August 2021 with effect from 3 August 2021. On 3 August 2021, the Board resolved to appoint Mr. Cheng Zhongyi as the Secretary to the Board of the Company for a term commencing from 3 August 2021 to the date when the term of the tenth session of the Board expires. Mr. Cheng Zhongyi, aged 45, is a senior accountant with a master degree in Engineering. In January 2015, he served as deputy director of financial planning department and chief financial officer of overseas engineering management center of Sinopec Shengli Oil Engineering Company Limited. In October 2017, he served as director of financial planning department of Sinopec Shengli Oil Engineering Company Limited. In April 2018, he served as chief financial officer of Sinopec Oil Engineering Geophysical Company Limited. In May 2020, he served as deputy general manager of Sinopec Shared Services Company Limited. In April 2021, he served as the Chief Financial Officer of the Company.