... workers surface:no burrs and sharp edges material:high quality copper excellent copper machining products (1)We have many experience for 10 ... 1. Casting Material: various kinds of brass,bronze and other copper alloys,for example CuZn39Pb2,CuZn40,CuSn7ZnPb,CuAl10Fe3,C37700,C84400,C83600 ... T/T2 .L/C3. West Union the advanced equipments are imported from Japan. They are the guarantee of the high quality.