PetroChina Company Limited
PetroChina Company Limited is an oil and gas company located in Beijing, China.
Petrochina is China's largest oil and gas company. PetroChina is involved in exploration, development, production and marketing of crude oil and natural gas; refining, transportation, storage and marketing of crude oil and oil products activities. It is a state-owned company, with 100% shares controlled by China National Petroleum Corporation (CNPC).