[Working principle of car control arm]:
The car control arm connects the wheel and the body, bears the weight of the wheel and the reaction force of the road, and adjusts the position of the wheel to ensure the driving stability and controllability of the vehicle.
[How to distinguish the quality of products]:
1. Strength test: understand the strength test the product has undergone to ensure its bearing capacity.
2. Installation stability: after installation, the vehicle can be stabilized to ensure product quality.
