Participants are seen during the China Green Companies Summit 2019 in Dunhuang, northwest China's Gansu Province, on April 22, 2019. The summit was held from April 22 to 23 in Dunhuang. (Xinhua/Fan Peishen)
China Green Companies Summit held in Dunhuang, NW China
Source: Xinhua| 2019-04-24 09:00:15|Editor: ZX
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