CNOOC Energy Technology & Services Limited operates as an offshore and onshore oil and gas production company in China and internationally. The company offers energy technology services, including engineering and technical services; equipment design; manufacturing, operation, and maintenance; and integrated oil and gas field production services; oil field recovery rates; supervision and inspection; oil field operation support; unconventional oil and gas integrated services, and equipment and facilities operation and maintenance integration; FPSO production and operation; and technical and support services for the production operations of offshore and onshore oil and gas companies. It also provides low-carbon environmental protection and digitalization services, which focuses on the development of technologies and services, such as safety emergency response, energy conservation and environmental protection, water treatment, green coatings, cold energy utilization, and digitalization, as well as engages in offshore wind power related activities. In addition, the company offers digital technology; green energy and green product supplies; and industrial chain services. Further, it provides energy logistics services, including support services for the production links, and mid-and downstream areas of the offshore oil industry; logistical support services for offshore oil and gas field exploitation through offshore material supply and catering services; assistance services for oil companies in offshore oil and gas transportation through coordination services; and distributes oil and gas by-products through sales services. The company was founded in 2005 and is headquartered in Beijing, China. CNOOC Energy Technology & Services Limited is a subsidiary of China National Offshore Oil Corporation.