CNOOC, a large state-owned enterprise directly under the State-owned Assets Supervision and Administration Commission of the State Council of China, is China's largest offshore oil and gas producer. Since its establishment, CNOOC has maintained a good momentum of development. From an upstream company solely engaged in oil and gas exploration, CNOOC Ltd. has developed into an integrated energy group with a prominent main business and a complete industrial chain, and has formed a group of oil and gas exploration and development, professional and technical services, Sales and fertilizer, natural gas and power generation, financial services, new energy and other business segments.