The boarding ladder to push or pull-type passenger boarding ladder, without fuel, simple operation, no environmental pollution and no solid, liquid and gaseous waste, to better provide efficient service for passengers, but also can improve airport ground support capability, which has the following characteristics 1. support span, good stability; 2. rails and outer body materials imported stainless steel, the overall layout of coordination, beautiful 3. The use of multiple sets of protective devices and emergency measures, the use of safe and reliable; The platform flexible structure, fully meet the convenience of docking with the aircraft door; 5. The structure of friction at all high-quality materials, good appearance; 6. stepladder with a special non-slip aluminum special, not only elegant appearance, and excellent non-slip effect