Guests watch a welding machine during the Lanzhou Investment & Trade Fair in Lanzhou, capital of northwest China's Gansu Province, July 4, 2019. The fair opened here on Thursday, and will last for five days. (Xinhua/Chen Bin)
Investment, trade fair opens in northwest China to boost economic cooperation
Source: Xinhua| 2019-07-04 18:39:58|Editor: Li Xia
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