China Offshore Oil Corporation (hereinafter referred to as "China Offshore Oil") is a super-large state-owned enterprise (central enterprise) directly under the State-owned Assets Supervision and Administration Commission of the State Council of China, headquartered in Beijing, with 98,750 employees and four upstream branches in Tianjin, Zhanjiang, Shanghai and Shenzhen. In Fortune magazine's list of the world's top 500 enterprises published in 20 14, China Offshore Oil Corporation ranked 79th.