Surface treatment plays a big role in the automotive spare parts for increasing the service lifespan of steering and suspension parts, developing wear and corrosion resistance and improving fatigue strength in ball joints, tie rod end, control arms and cross rod, etc.

For all of the car steering and suspension importers, it is very important to inspect the quality of the ball joint. It is vital to the safe of every user. How to check the quality then? Below is the guides.