A visitor looks through a microscope to view images produced by projection aligner during the 17th China International Semiconductor Expo in Shanghai, east China, Sept. 3, 2019. (Photos: Xinhua)

Staff members test a chip testing facility during the 17th China International Semiconductor Expo in Shanghai, east China, Sept. 3, 2019.

Visitors view integrated circuit for cars during the 17th China International Semiconductor Expo in Shanghai, east China, Sept. 3, 2019.

Visitors view the exhibits during the 17th China International Semiconductor Expo in Shanghai, east China, Sept. 3, 2019.

A visitor views the exhibits during the 17th China International Semiconductor Expo in Shanghai, east China, Sept. 3, 2019.