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REVENUE : $ 274.6 billion MARKET VALUE : $ 203.8 billion Petro China is involved in the exploration , development , production and sale of crude oil and natural gas . The business is also involved in the refining of crude oil and petroleum products , production and marketing of primary petrochemical products , derivative chemical products and other chemical products .

The company was founded on the 5th of November , 1999 and is headquartered in Beijing , China . It employs over 851,000 people and has more than $ 368.69 billion in assets . Petro China ’ s Chief Executive Officer is Wang Dongjin .

24 March 2017