10 Largest Energy Companies In the World

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7. PetroChina Company Limited (601857.SS)

Market Cap as of February 23: $134.51 billion

PetroChina Company Limited (601857.SS) is a Chinese state-owned oil and gas company. It is the largest oil and gas producer in Asia and was founded in 1999. It is an integrated oil and gas company, which means that it engages in all oil and gas operations from exploration to distribution.

PetroChina Company Limited (601857.SS) is listed on Shanghai Stock Exchange along with the Hong Kong Stock exchange and represents 50% to 60% of China’s domestic oil and gas production.

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