1)brass carbon brush box 2)CNC,CMM 3)ISO9001:2000,ERP ... ,dimension:5x5-200x200mm 5)Ten-year OEM brass investment casting carbon brush box MaterialsCopper alloy, bronze, brass, other materials can according to customer ... cooperate with you.Material and Equipments:Material:various kinds of brass,bronze and other copper alloys,for example CuZn39Pb2,CuZn40,CuSn7ZnPb,CuAl10Fe3 ...