Employees of a medical enterprise pack an oxygen concentrator in Shenyang, northeast China's Liaoning Province, Jan. 5, 2023. (Xinhua/Yang Qing)
An employee of a medical enterprise works on the production line of oxygen concentrators in Shenyang, northeast China's Liaoning Province, Jan. 5, 2023. (Xinhua/Yang Qing)
Employees of a medical enterprise work on the production line of oxygen concentrators in Shenyang, northeast China's Liaoning Province, Jan. 5, 2023. (Xinhua/Yang Qing)
An employee of a medical enterprise works on the production line of oxygen concentrators in Shenyang, northeast China's Liaoning Province, Jan. 5, 2023. (Xinhua/Yang Qing)
An employee of a medical enterprise works on the production line of oxygen concentrators in Shenyang, northeast China's Liaoning Province, Jan. 5, 2023. (Xinhua/Yang Qing)
An employee of a medical enterprise works on the production line of oxygen concentrators in Shenyang, northeast China's Liaoning Province, Jan. 5, 2023. (Xinhua/Yang Qing)