It is made of high-strength rectangular steel pipe with good rigidity and stability. Equipped with universal casters, mobile and flexible. The span of the two ends of the frame is adjustable, which can be adapted to the requirements of crossing different obstacles. The two ends of the frame are vertically adjustable and can be used to work on slopes or steps with a certain slope. Single-column aluminum alloy elevator: This series of products is indoor type, widely used in high-altitude operations in star hotels, large supermarkets and other industry halls and workshops. Low power consumption, no pollution, no damage to the ground during work, can be used for wall work and tapping work, work without dead ends.