CuZn37 CuZn40 铜合金棒/板/线/带/管
CuZn23Al4 铜合金棒..
CuZn19Al铜合金棒/板..
CuZn38Sn1 铜合金..
CuZn40pb3 CuZn..
CuZn37 CuZn40 ..
CuZn30 CuZn33铜..