A staff member (2nd R) introduces the exhibit to a visitor at the China International Industry Fair in Shanghai, east China, Sept. 15, 2020. The five-day China International Industry Fair opened at the National Exhibition and Convention Center (Shanghai) on Tuesday, which attracted over 2,000 enterprises from 22 countries and regions. (Xinhua/Fang Zhe)

Photo taken on Sept. 15, 2020 shows the industrial robots at the China International Industry Fair in Shanghai, east China. The five-day China International Industry Fair opened at the National Exhibition and Convention Center (Shanghai) on Tuesday, which attracted over 2,000 enterprises from 22 countries and regions. (Xinhua/Ding Ting)

A staff member (2nd R) introduces the research results to a visitor at the China International Industry Fair in Shanghai, east China, Sept. 15, 2020. The five-day China International Industry Fair opened at the National Exhibition and Convention Center (Shanghai) on Tuesday, which attracted over 2,000 enterprises from 22 countries and regions. (Xinhua/Fang Zhe)

People watch an industrial robot at the China International Industry Fair in Shanghai, east China, Sept. 15, 2020. The five-day China International Industry Fair opened at the National Exhibition and Convention Center (Shanghai) on Tuesday, which attracted over 2,000 enterprises from 22 countries and regions. (Xinhua/Fang Zhe)

A vertical take-off and landing drone is displayed by Northwestern Polytechnical University at the China International Industry Fair in Shanghai, east China, Sept. 15, 2020. The five-day China International Industry Fair opened at the National Exhibition and Convention Center (Shanghai) on Tuesday, which attracted over 2,000 enterprises from 22 countries and regions. (Xinhua/Liu Ying)

Photo taken on Sept. 15, 2020 shows a group of transport robots at the China International Industry Fair in Shanghai, east China. The five-day China International Industry Fair opened at the National Exhibition and Convention Center (Shanghai) on Tuesday, which attracted over 2,000 enterprises from 22 countries and regions. (Xinhua/Fang Zhe)

People watch industrial robots at the China International Industry Fair in Shanghai, east China, Sept. 15, 2020. The five-day China International Industry Fair opened at the National Exhibition and Convention Center (Shanghai) on Tuesday, which attracted over 2,000 enterprises from 22 countries and regions. (Xinhua/Ding Ting)

People visit the Italian National Pavilion at the China International Industry Fair in Shanghai, east China, Sept. 15, 2020. The five-day China International Industry Fair opened at the National Exhibition and Convention Center (Shanghai) on Tuesday, which attracted over 2,000 enterprises from 22 countries and regions. (Xinhua/He Xiyue)