C61900 C62300 C62400环保铜合金板材带材棒
AlD67-5-2-2 ZH..
ZCuPb20Sn5 ZCu..
C61900 C62300 ..
ZCuSn10Zn2 ZC..
C61000 C61300 ..
ZCuSn3Zn11Pb4 ..