In order to strengthen the internal management of the Company, improve the self-discipline of employees, and ensure that the Company's production and business activities proceed smoothly without business ethics violation, the Company has formulated a set of rules and established an effective system to punish and prevent fraud, such as The Code of Commercial Behavior and Conduct of Employees of CNOOC Limited, The Procedures for Handling Rule Violations, Regulations on Conflicts of Interest, Petition and Visiting Reporting and Appeal Management Measures, and Financial Control Complaint Management Measures.