A staff member tests a face mask at a workshop of a medical supply company in Harbin, northeast China's Heilongjiang Province, Jan. 27, 2021. As new confirmed COVID-19 cases were reported in Heilongjiang Province since January, there has been a growing demand on medical supplies. Local authorities have been actively promoting medical supplies production to ensure the epidemic control and prevention efforts. (Xinhua/Xie Jianfei)
