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Friday, November 12, 1999, updated at 16:12(GMT+8)
Sci-Tech Robot Developed to Clean Tall Buildings

A team of scientists in northeast China has created a lightweight robot that can scale tall buildings and clean their exterior walls.

The remote-controlled robot, operated by people on the ground, can move up or down nearly 30 floors at 2-10 meters per minute.

According to its creators, the small but efficient robot can do the work of four people. The robot weighs 23.2 kilograms.

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