On 31 May 2023, the board of directors of China Oilfield Services Limited received the written resignation from Mr. Wu Wenlai, a current non-executive director of the Company. The resignation of Mr. Wu Wenlai as a non-executive director of the Company and a member of the Remuneration and Assessment Committee of the Board was due to his retirement, which took effect from the date when a new executive director is appointed by the shareholders of the Company at the extraordinary general meeting.