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PetroChina

As its name suggests, PetroChina Company Ltd is the listed arm of state-owned China National Petroleum Corporation (CNPC). It is China's biggest oil producer, and is listed in Hong Kong, New York, and Shanghai.

Sinopec surprises with 41b yuan first-half profit

China Petroleum & Chemical (Sinopec), the nation's second-largest oil and gas producer and the world's second-largest oil refiner, plans to continue expanding its refining operation despite losses sparked by Beijing's fuel price controls.