1. Equipped armor plate spring of structure poised
2. The trailer adopt the adjustable- height bolted towed rack, which is suitable for different height tractor
3. Circular welded steel pipe used straight-through axle, compact, safe and reliable
4. Have mechanical support device at each corner of the trailer
5. Inertial traveling brake, station brake & disengage emergency brake between trailer and tractor to ensure the travelling safety under any condition
6. Equipped with steering and brake light indicator
7. Ladder design are more convenient for operation and maintenance
