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Aerial photo taken on April 11, 2019 shows oil tanks in the coal liquefaction factory of CHN Energy in Ordos, north China's Inner Mongolia Autonomous Region. (Xinhua/Liu Lei)
Aerial photo taken on April 11, 2019 shows oil tanks in the coal liquefaction factory of CHN Energy in Ordos, north China's Inner Mongolia Autonomous Region. (Xinhua/Liu Lei)