A staff packages masks after quality test at a medical mask production workshop of the Naton Medical Group in Beijing, capital of China, March 11, 2020. (Xinhua/Ren Chao)

Approved by local authorities, the Naton Medical Group in Beijing, which is engaged in the invention and production of orthopaedic implant, has set up a mask production line to ensure the supply of facial masks during the fight against the novel coronavirus epidemic.

Staff work at a medical mask packaging workshop of the Naton Medical Group in Beijing, capital of China, March 11, 2020. (Xinhua/Ren Chao)

Staff work at a medical mask production workshop of the Naton Medical Group in Beijing, capital of China, March 11, 2020. (Xinhua/Ren Chao)

A staff works at a N95 mask production workshop of the Naton Medical Group in Beijing, capital of China, March 11, 2020. (Xinhua/Ren Chao)

A staff (front) checks masks at a medical mask production workshop of the Naton Medical Group in Beijing, capital of China, March 11, 2020. (Xinhua/Ren Chao)

A staff works at a medical mask production workshop of the Naton Medical Group in Beijing, capital of China, March 11, 2020. (Xinhua/Ren Chao)

Staff work at a medical mask production workshop of the Naton Medical Group in Beijing, capital of China, March 11, 2020. (Xinhua/Ren Chao)

Staff check masks at a medical mask production workshop of the Naton Medical Group in Beijing, capital of China, March 11, 2020. (Xinhua/Ren Chao)

A staff (1st R) checks masks at a medical mask production workshop of the Naton Medical Group in Beijing, capital of China, March 11, 2020. (Xinhua/Ren Chao)