The Lighting vents is an ideal solution to prevent dirt from entering headlights, and can maintain excellent breathable performance for a long time in the service life of a car.
When conveying material up to a certain angle, That's when you need a Anti Skid Pattern Rubber belt, they have a cleated surface that keeps loose material in place, even at steep angles.
Rubber spring: It's a kind of high elastomer, making natural rubber. The elastic modulus of rubber spring is small, and it has large elastic deformation after loading, so as to absorb shock and vibration.