Pal and Chum impressed with their chat and fast moves . [Photo]

　　Japanese electronics firm Hitachi has unveiled its first humanoid robot, called Emiew, to challenge Honda’s Asimo and Sony’s Qrio robots.

　　Two wheel-based Emiews, Pal and Chum, introduced themselves to reporters at a press conference in Japan.

　　They will be guests at this month’s World Expo. Sony and Honda have both built robots to showcase engineering.