• COSL disclosed its board and board committee lineup, dated July 29, 2026.
• Chairman Liu Jianzhong sits on the nomination committee.
• Independent director Zhao Lijuan chairs the audit committee.
• Independent director Yao Xin chairs the nomination committee.
• Independent director Guo Lingguang chairs the remuneration and appraisal committee.

Disclaimer: This news brief was created by Public Technologies (PUBT) using generative artificial intelligence. While PUBT strives to provide accurate and timely information, this AI-generated content is for informational purposes only and should not be interpreted as financial, investment, or legal advice. COSL - China Oilfield Services Limited published the original content used to generate this news brief via IIS, the regulatory disclosure system operated by the Hong Kong Stock Exchange (HKex) (Ref. ID: HKEX-EPS-20260729-12260396), on July 29, 2026, and is solely responsible for the information contained therein.