People attend the China International Medical Equipment Fair (CMEF) in Shanghai, East China, April 11, 2018. The 79th CMEF opened here on April 11. [Photo/Xinhua]

An exhibitor shows a medical device at the China International Medical Equipment Fair (CMEF) in Shanghai, East China, April 11, 2018. The 79th CMEF opened here on April 11. [Photo/Xinhua]

An exhibitor shows a medical device at the China International Medical Equipment Fair (CMEF) in Shanghai, East China, April 11, 2018. The 79th CMEF opened here on April 11. [Photo/Xinhua]

People attend the China International Medical Equipment Fair (CMEF) in Shanghai, East China, April 11, 2018. The 79th CMEF opened here on April 11. [Photo/Xinhua]

An exhibitor shows a medical device at the China International Medical Equipment Fair (CMEF) in Shanghai, East China, April 11, 2018. The 79th CMEF opened here on April 11. [Photo/Xinhua]