Features:
1) Guide arm, two-leaf spring, no clearance design; 

2) Two-bellow compounded single swing arm mechanism, loaded together by air bag and leaf spring, shock absorber installed inclined to reduce rubs and to prolong the lifespan; 

3) Vertical design of the flexible elements, match all kinds of trailer axles; Suitable for single axle, double axle and multi-axle trailer (the first and the third axle for tri-axle trailer can realize the performance of lift); 

4) High load capacity, high rigidity, low frequency, stronger anti-roll capacity, better ride comfort, super better quality and price.