Employees assemble ventilators at a plant of Beijing Aeonmed Co., LTD., an anesthesia and respiratory medical equipment enterprise, in Yanjiao, a town of north China's Hebei Province, March 25, 2020. (Photos: Xinhua)

Employees produce ventilators at Mindray Bio-Medical Electronics Co., Ltd., a medical device manufacturer based in Shenzhen, south China's Guangdong Province, March 31, 2020.

A technician tests a ventilator at a research and development center of Jiangsu Yuyue Medical Equipment & Supply Co., Ltd. in Danyang, east China's Jiangsu Province, April 2, 2020.

An employee transports packages of ventilators that will be exported to Italy at Guangming Manufacturing Center of Mindray Bio-Medical Electronics Co., Ltd. in Shenzhen, south China's Guangdong Province, March 31, 2020.