PetroChina Co. Ltd.
PetroChina Co. Ltd. is a Chinese state oil company. It explores, produces, refines, transports and distributes oil and natural gas. The company's total staff number is half a million people.
PetroChina Co. Ltd. is a Chinese state oil company. It explores, produces, refines, transports and distributes oil and natural gas. The company's total staff number is half a million people.