... are widely used in appliances,metallurgy,mining,ports. Electro hydraulic drum brakes are widely used in appliances, metallurgy, mining, ports, ... brake pad using plug-in card installed.These Electro hydraulic drum brakes are Safe and reliable,easy to replace,Qian ... size installation with the standard JB/ZQ4388-1997 Electro hydraulic drum brakes use operation: 1.The use of ambient temperature ...