... DescriptionNameCNC machining part:Copper machining part:Precision machining partMaterialBrass C37710/CuZn39Pb2,C36000,C37700Surface TreatmentZinc ... Name: Qingdao Zehan Machinery Manufacturing CO., Ltd.(2) Main products: CNC machining precision parts: valve accessory, brass tube ... , elbow, tee, nut; Auto-lathe turning precision part: precision electronic parts, fasteners, and other jeweler accessories ...