A visitor experiences therapy equipment during the 44th China International Assistive Products Industry and International Welfare Machine Exposition in southwest China's Chongqing Municipality, June 26, 2026. The 44th China International Assistive Products Industry and International Welfare Machine Exposition kicked off at Chongqing International Expo Center in Chongqing on Friday, with hundreds of leading enterprises at home and abroad participating in the expo. (Xinhua/Chen Cheng)

A staff member shows a prosthetic product to visitors during the 44th China International Assistive Products Industry and International Welfare Machine Exposition in southwest China's Chongqing Municipality, June 26, 2026. The 44th China International Assistive Products Industry and International Welfare Machine Exposition kicked off at Chongqing International Expo Center in Chongqing on Friday, with hundreds of leading enterprises at home and abroad participating in the expo. (Xinhua/Chen Cheng)

A visitor tries on a pair of auto-focus glasses during the 44th China International Assistive Products Industry and International Welfare Machine Exposition in southwest China's Chongqing Municipality, June 26, 2026. The 44th China International Assistive Products Industry and International Welfare Machine Exposition kicked off at Chongqing International Expo Center in Chongqing on Friday, with hundreds of leading enterprises at home and abroad participating in the expo. (Xinhua/Chen Cheng)

A boy views an intelligent bionic hand during the 44th China International Assistive Products Industry and International Welfare Machine Exposition in southwest China's Chongqing Municipality, June 26, 2026. The 44th China International Assistive Products Industry and International Welfare Machine Exposition kicked off at Chongqing International Expo Center in Chongqing on Friday, with hundreds of leading enterprises at home and abroad participating in the expo. (Xinhua/Chen Cheng)

A visitor experiences a brain-computer interface device for upper limb rehabilitation during the 44th China International Assistive Products Industry and International Welfare Machine Exposition in southwest China's Chongqing Municipality, June 26, 2026. The 44th China International Assistive Products Industry and International Welfare Machine Exposition kicked off at Chongqing International Expo Center in Chongqing on Friday, with hundreds of leading enterprises at home and abroad participating in the expo. (Xinhua/Chen Cheng)

Visitors view an intelligent bionic hand during the 44th China International Assistive Products Industry and International Welfare Machine Exposition in southwest China's Chongqing Municipality, June 26, 2026. The 44th China International Assistive Products Industry and International Welfare Machine Exposition kicked off at Chongqing International Expo Center in Chongqing on Friday, with hundreds of leading enterprises at home and abroad participating in the expo. (Xinhua/Chen Cheng)

A visitor shoots the demonstration of an intelligent bionic hand during the 44th China International Assistive Products Industry and International Welfare Machine Exposition in southwest China's Chongqing Municipality, June 26, 2026. The 44th China International Assistive Products Industry and International Welfare Machine Exposition kicked off at Chongqing International Expo Center in Chongqing on Friday, with hundreds of leading enterprises at home and abroad participating in the expo. (Xinhua/Chen Cheng)

An exhibitor demonstrates the prosthetic 3D model during the 44th China International Assistive Products Industry and International Welfare Machine Exposition in southwest China's Chongqing Municipality, June 26, 2026. The 44th China International Assistive Products Industry and International Welfare Machine Exposition kicked off at Chongqing International Expo Center in Chongqing on Friday, with hundreds of leading enterprises at home and abroad participating in the expo. (Xinhua/Chen Cheng)