A staff member operates a removable transfer robot at the 10th China International Equipments Manufacturing Industries Expo. (IEME) in Tianjin, north China, March 6, 2014. The four-day expo kicked off here Thursday, attracting more than 1,200 enterprises worldwide. (Xinhua/Zhou Qinlong)

A robot is exhibited at the 10th China International Equipments Manufacturing Industries Expo. (IEME) in Tianjin, north China, March 6, 2014. The four-day expo kicked off here Thursday, attracting more than 1,200 enterprises worldwide. (Xinhua/Zhou Qinlong)