China Petrochemical Corporation (Sinopec Group) is China's leading integrated energy and chemical company. Its activities include oil and gas exploration and production, oil refining, petrochemicals and chemical products, and the import and export of crude oil, natural gas, refining oil products and chemicals. It is China's second largest oil and gas producer and the largest refiner and distributor of refined products and chemicals. It is listed on the Hong Kong, London, New York and Shanghai stock exchanges.