Features                                                                                 

1. Clear floor design, save space
2. Adopt double cylinders,4*4 higher and stronger chain, with the wire rope balance system.
3. Manual locksrelease from two sides.
4. Rubber pad door-opening protection.
5. Rubber support with first, second and third level spiral to adjust the height.
6. Limited switch.
7. The arm adopts two stages or three stages design, large range adjustment, suitable for different vehicle chassis.