Platforms are used for going up and down of tower crane drivers of high-rise buildings and for welding and decorations of the shipbuilding industry. Also, they are applied for maintenance and services of the chimneys and boilers in large tank power plants and for maintenance and decorations of dams and bridges. Meanwhile, they are used for decorations of outer walls, such as plastering, heat preservation, doping, and the wall installation, cleaning and marble dry hanging.