Staff work on the mask production line of Lanzhou Petrochemical Company in Lanzhou, northwest China's Gansu Province, March 4, 2020. The newly established masks production line of the company was put into operation to help the prevention and control of the COVID-19 epidemic. (Xinhua/Chen Bin)
Petrochemical company sets up masks production line to help epidemic prevention, control
Source: Xinhua| 2020-03-04 20:47:02|Editor: mingmei
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