Workers pack melt-blown nonwoven fabric at the workshop of the China Pingmei Shenma Group in Pingdingshan City, central China's Henan Province, May 14, 2020. In order to expand the production capacity of melt-blown nonwoven fabric, a key material for masks, the China Pingmei Shenma Group has accordingly established a production line and officially put it into operation on May 1. The company now produces 4 to 5 tonnes of melt-blown nonwoven fabric, which can be used for making more than four million medical masks. (Xinhua/Hao Yuan)