China announced on Wednesday the discovery of a major shale oilfield in the Daqing Oilfield cluster with expected reserves of 1.27 billion tons of oil, Chinese Xinhua news agency reported. Daqing ...
网页链接China announced on Wednesday the discovery of a major shale oilfield in the Daqing Oilfield cluster with expected reserves of 1.27 billion tons of oil, Chinese Xinhua news agency reported. Daqing ...
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