The dolly adopts the most advanced, stable and secure technical design of China and foreign countries.The dolly working surface is loaded with 22 zinc-coated rollers which to be advantageous for container loading and unloading. The towbar has multi-dolly connection and braking dual functions.The?trailer?can 360° revolve , 90° automatic stoppage spacing. May load LD1、LD2、LD3 aviation container.