Brake pads are an important brake part of a car and an important part to ensure the safety of the driver. Brake pads are divided into disc brake and drum brake, and the material generally includes resin brake pads, powder metallurgy brake pads, carbon composite brake pads, ceramic brake pads. Replace the new brake pads must be running-in, in order to effectively maximize its braking role, here to look at the specific running-in method (commonly known as open skin) :