Workers make masks at a medical supply company in Nan'an District, southwest China's Chongqing, Feb. 11, 2020. China is making every effort to ensure the supply of medical and daily necessities for citizens as the country battles the novel coronavirus epidemic.

Photo taken on Feb. 11, 2020 shows masks made at a medical supply company in Nan'an District, southwest China's Chongqing. China is making every effort to ensure the supply of medical and daily necessities for citizens as the country battles the novel coronavirus epidemic.

A worker packs masks at a medical supply company in Nan'an District, southwest China's Chongqing, Feb. 11, 2020. China is making every effort to ensure the supply of medical and daily necessities for citizens as the country battles the novel coronavirus epidemic.

A worker makes masks at a medical supply company in Nan'an District, southwest China's Chongqing, Feb. 11, 2020. China is making every effort to ensure the supply of medical and daily necessities for citizens as the country battles the novel coronavirus epidemic. (Photos: Xinhua)

A worker packs masks at a medical supply company in Nan'an District, southwest China's Chongqing, Feb. 11, 2020. China is making every effort to ensure the supply of medical and daily necessities for citizens as the country battles the novel coronavirus epidemic.

A worker arranges masks at a medical supply company in Nan'an District, southwest China's Chongqing, Feb. 11, 2020. China is making every effort to ensure the supply of medical and daily necessities for citizens as the country battles the novel coronavirus epidemic.

Workers make masks at a medical supply company in Nan'an District, southwest China's Chongqing, Feb. 11, 2020. China is making every effort to ensure the supply of medical and daily necessities for citizens as the country battles the novel coronavirus epidemic.

A worker makes masks at a medical supply company in Nan'an District, southwest China's Chongqing, Feb. 11, 2020. China is making every effort to ensure the supply of medical and daily necessities for citizens as the country battles the novel coronavirus epidemic.

Workers carry masks at a medical supply company in Nan'an District, southwest China's Chongqing, Feb. 11, 2020. China is making every effort to ensure the supply of medical and daily necessities for citizens as the country battles the novel coronavirus epidemic.

A worker carries masks at a medical supply company in Nan'an District, southwest China's Chongqing, Feb. 11, 2020. China is making every effort to ensure the supply of medical and daily necessities for citizens as the country battles the novel coronavirus epidemic.

A worker makes masks at a medical supply company in Nan'an District, southwest China's Chongqing, Feb. 11, 2020. China is making every effort to ensure the supply of medical and daily necessities for citizens as the country battles the novel coronavirus epidemic.

A worker makes masks at a medical supply company in Nan'an District, southwest China's Chongqing, Feb. 11, 2020. China is making every effort to ensure the supply of medical and daily necessities for citizens as the country battles the novel coronavirus epidemic.