A visitor experiences the virtual intelligent system to try on clothes during the China (Shanghai) International Technology Fair in Shanghai, east China, May 8, 2013. (Xinhua/Lai Xinlin)

A visitor views a new-energy vehicle during the China (Shanghai) International Technology Fair in Shanghai, east China, May 8, 2013. (Xinhua/Lai Xinlin)

A smart robot with the skill to draw pictures is exhibited during the China (Shanghai) International Technology Fair in Shanghai, east China, May 8, 2013. (Xinhua/Lai Xinlin)

 A visitor experiences the detection and identification system based on sensors during the China (Shanghai) International Technology Fair in Shanghai, east China, May 8, 2013. (Xinhua/Lai Xinlin)

A visitor experiences the driving simulation system during the China (Shanghai) International Technology Fair in Shanghai, east China, May 8, 2013. (Xinhua/Lai Xinlin)

A visitor takes photos of a 3D printer which is working to print a chair model during the China (Shanghai) International Technology Fair in Shanghai, east China, May 8, 2013. (Xinhua/Lai Xinlin)