According to “Procedures for Environmental, Safety and Health Management Review” and “Operating Instructions for Investigation of Abnormal Incidents,” the designated management and stakeholders are required to review the compliance of the EHS Management System on a quarterly basis and establish the operating procedures for investigations of abnormal incidents (e.g., occupational hazards (including road traffic accidents), abnormal accidents, hazard identification, safety patrol, on-site audit, etc.), to find out the actual causes of the incidents, make corrections and provide preventive strategy for future occurrences.