Brake pads generally composed of steel, insulation and adhesive friction blocks, steel plates subjected to coating to rust coating process using SMT-4 Temperature Tracker to detect the temperature distribution of the coating process to ensure quality. Wherein the insulating layer is made of non-heat transfer material, the purpose of insulation. Friction block friction material, a binder, when the brakes are pressed on the friction brakes or brake drums, brake deceleration of the vehicle so as to achieve the purpose. Due to friction, the friction block will gradually be worn, in general, the lower the cost of brake pad wear faster.