On 28 April 2021, China Oilfield Services Limited's board of directors received the resignation from Mr. Qi Meisheng in respect of his posts of Chairman, Executive Director and Chief Executive Officer of the Company. The resignation of Mr. Qi Meisheng as the Chairman and the Chief Executive Officer of the Company and the member of nomination committee of the Board was due to the adjustment of his work arrangement, with effect from 28 April 2021. After this resignation, Mr. Qi Meisheng will remain as an Executive Director of the Company. On 28 April 2021, the Board of the Company appointed Mr. Zhao Shunqiang, an Executive Director of the Company, to replace Mr. Qi Meisheng as the Chairman and the Chief Executive Officer of the Company and the member of nomination committee of the Board, with effect from 28 April 2021. At the same time, Mr. Zhao Shunqiang resigned as the President of the Company on 28 April 2021. Mr. Zhao Shunqiang, from October 2002 to August 2004, served as Vice GM of Tianjin Branch of COSL; from August 2004 to November 2004, he served as Director of Drilling Technology Institute (Tanggu) of COSL IPM Division; from November 2004 to December 2005, he served as GM of Tianjin Branch of COSL; from December 2005 to April 2012, he served as GM of the Production Optimization Division of COSL, while he also served as the Dean of Production Optimization Research Institute from January 2011 to April 2012; from April 2012 to March 2018, he served as the Vice GM of CNOOC International Limited; from March 2018 to August 2020, he served as President of CNOOC Uganda Limited; from August 2020 to April 2021, he served as President of COSL. Since October 2020, he has served as an Executive Director of COSL. Mr. Zhao has over 30 years of experience in the oil and natural gas industry.