The product is applicable to all industries aerial equipment installation, maintenance and other portable high-altitude operations. Choose according to different requirements of different dynamic forms (such as: three-phase AC power, single-phase AC power supply, DC power supply and internal combustion engines, etc.), plus coupled with action hydraulic device, power or no power in the usual landing place to work and stretching plus platform, the platform can be extended to a length less than the desired location, thereby improving efficiency. Modern tall buildings, equipment, with the ideal product is safe and civilized production of the necessary height.