Shaanxi Yanchang Petroleum (Group) Corp. Ltd. (Yanchang Petroleum Group), directly attached to Shaanxi People’s Provincial Government, is one of the four qualified enterprises for oil and gas exploration in China. In 1905, Yanchang Petroleum Factory was established and in 1907 drilled the first oil well in mainland China.
Businesses include oil and gas exploration, engineering construction, technical research and development, equipment manufacturing, Oil and gas development, petrochemical engineering, oil refining, comprehensive chemical engineering of oil, gas, coal, and salt and pipeline transport.
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