Landing stage can achieve double tops and down. May need to also spell ladder-shaped, multi-view, multi-level ladder, consisting lift group can travel range composed of different steps, rich multi-stage telescopic stage adaptation in effect, halls, theaters, multi-purpose hall, studio, culture, sports stadiums and other equipment, telescopic stage, the use of effective guidance system that allows scalable platform in the translation process and the fixed station gap is small, smooth, stepless speed change synchronization device using low speed high torque electric drive devices, telescopic process absolutely parallel, freely, telescopic place, can automatically fill level