CuAl10Fe3 CuNi18Zn20 良胜铜业
进口铝青铜板C1221 C2..
进口青铜板C1201 C12..
CuNi18Zn20 C15..
CuAl10Fe3 CuN..
不锈钢,耐热钢 2Cr25N..
1Cr20Ni14Si2,..