The board of directors of Petro-king Oilfield Services Limited announced that Mr. Lin Jingyu has been appointed as chief executive officer of the Company with effect from 22 March 2023. Mr. Lin Jingyu, aged 49, has over 26 years of experience in the oilfield and gas field industry. Mr. Lin graduated from Xi'an Shiyou College (currently renamed as Xi'an Shiyou University) with a Bachelor degree in petroleum engineering in 1996.

He also graduated from Yangtze University with a Master degree in petroleum and gas engineering in 2007. Mr. Lin is qualified as a senior engineer in oil production engineering in China since December 2007. Prior to joining the Group, Mr. Lin worked in the Oil Production Technology Research Institute of Sinopec Henan Petroleum Exploration Bureau as an assistant engineer from July 1996 to October 2001.

He also worked in the Engineering Technology Research Institute of Sinopec Henan Oilfield Branch Company from November 2001 to August 2008 and his last position was a senior engineer and a deputy section chief. Mr. Lin joined the Group in August 2008 and was mainly responsible for the production enhancement business. He has been promoted to a vice president of the Group and the general manager of the production enhancement department of the Group since September 2013.

Mr. Lin is currently a director, the general manager and the legal representative of Petro-king Oilfield Technology Limited, an indirectly wholly-owned subsidiary of the Company.