Front drum brake's material is ADC12 which is inclusion free and high density.It is die-casted by professional die-casting machine with large tonnage of 160T-180T,to ensure the inner structure of brake shoe high density,pore-free.When braking,the braking behaviour like pulling and detaching etc will not happen.The surface of it will be processed by the automatic painting production line so that it can be corrosion resistent and more beautiful.