A visitor tries an optometry device during the 7th China International Import Expo (CIIE) in east China's Shanghai, Nov. 8, 2024. A range of precision instruments, products and processing equipment are on display at the ongoing 7th CIIE, attracting great attention from the visitors. [Photo/Xinhua] A visitor takes photos of a multi-axis stereoscopic motion device during the 7th China International Import Expo (CIIE) in east China's Shanghai, Nov. 8, 2024. [Photo/Xinhua] A robot solving a Rubik's Cube is pictured during the 7th China International Import Expo (CIIE) in east China's Shanghai, Nov. 8, 2024. [Photo/Xinhua] A plastic disk with a QR code printed on it swiftly passes through a QR code scanner during the 7th China International Import Expo (CIIE) in east China's Shanghai, Nov. 8, 2024. [Photo/Xinhua] A probe robotic arm is pictured during the 7th China International Import Expo (CIIE) in east China's Shanghai, Nov. 8, 2024. [Photo/Xinhua] This photo taken on Nov. 8, 2024 shows a precision sewing machine during the 7th China International Import Expo (CIIE) in east China's Shanghai. [Photo/Xinhua] A robotic arm moves a cellphone shell during the 7th China International Import Expo (CIIE) in east China's Shanghai, Nov. 8, 2024. [Photo/Xinhua] This photo taken on Nov. 8, 2024 shows circuit board probing devices during the 7th China International Import Expo (CIIE) in east China's Shanghai. [Photo/Xinhua] A welding inspection device is showcased during the 7th China International Import Expo (CIIE) in east China's Shanghai, Nov. 8, 2024. [Photo/Xinhua]