Advantages: its functions with walking and turning drive without manual traction, without external power mobile flexible, so that high-altitude operations more convenient, efficient and safe production of modern enterprises the ideal aerial equipment. Able to work in different states, fast, slow walk, just one continuous operation can be completed in the air, up and down, forward, backward, turning so all the action. Particularly suited to airport terminals, stations, terminals, shopping malls, stadiums, residential property, factories, mines and other large plant-wide operations.