8th China (Shanghai) International Technology Fair kicks off (2)

Visitors view tunnel boring machine models during the 8th China (Shanghai) International Technology Fair (CSITF) in east China's Shanghai, April 15, 2021. The 8th CSITF kicked off on Thursday. With an exhibition area covering 35,000 square meters, this year's fair has 5 different sections and has attracted over 1,000 exhibitors. (Xinhua/Fang Zhe)