tri-trailer air suspension system with lifting function.
Optimum static and dynamic axle load equalization
3-D trailing arms

Guide arm, two-leaf spring, no clearance design;Two-air bags compounded single swing arm mechanism, loaded together by air bag and leaf spring, shock absorber installed inclined to reduce rubs and to prolong the life span;Vertical design of the flexible elements, match all kinds of trailer axles; suitable for single axle, double axles and multi-axle trailer. (The first and the third axle for tri-axle trailer can realize the performance of lift)High load capacity, high rigidity, low frequency, stronger anti-roll capacity, better ride comfort, super better quality and price.