China Petroleum & Chemical Corporation, an energy and chemical company, engages in the oil and gas and chemical operations in Mainland China. It operates through Exploration and Production, Refining, Marketing and Distribution, Chemicals, and Corporate and Others segments. The company explores and develops oil fields; produces natural gas; produces, processes, purifies, imports, and trades in crude oil; manufactures, sells, and trades in petroleum products; owns and operates oil depots and service stations; and produces, distributes, and sells refined petroleum products, including gasoline and diesel. It also manufactures, sells, markets, and distributes petrochemicals and derivative petrochemical products, and other chemical products, such as basic organic chemicals, synthetic resins, synthetic fiber monomers and polymers, synthetic fibers, synthetic rubber, and chemical fertilizers, as well as ethylene and downstream by-products.