From the perspective of materials, shock absorbers are mainly divided into hydraulic and pneumatic types, and there is also a variable damping shock absorber. From the perspective of structure, it is divided into single-tube and double-tube types.

Function of shock absorber:
Shock absorber is used to suppress the shock and impact from the road surface when the spring rebounds after shock absorption. It is widely used in automobiles to accelerate the attenuation of frame and body vibration to improve the driving smoothness of the car. When passing through uneven roads, although the shock-absorbing spring can filter the vibration of the road, the spring itself will still have reciprocating motion, and the shock absorber is used to suppress this spring jump.

Replacement of shock absorber:
There are four shock absorbers on each car, namely the front left, front right, rear left, and rear right. If the shock absorber needs to be replaced, it is best to replace two at a time. When there is a problem with one front or rear shock absorber, the front or rear shock absorber needs to be replaced with FAW to avoid uneven force on the balance of the car, resulting in different force on the shock absorber and shock absorber problems.