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C5441-H磷铜棒板化学成分C5341B-H高精磷青铜带高硬度C5441B-H环保磷青铜带材C5240-EH强度高锡磷青铜带C5240-SH耐冲压磷铜带材C5240-ESH高精密锡磷青铜板C5240-XSH磷青铜带材规格齐全C5248-H铜合金材质证明C5248-EH导电磷青铜带冲压件铜合金材质C5191P-3/4H磷铜带连接器端子材料C5191P-SH耐腐蚀防锈导电耐疲劳材料C5191R-3/4H厂价直销磷铜线C5191R-SH弹簧磷铜线/铜带C5191-3/4H环保高弹性磷铜带C5191-SH易切削焊接耐蚀磷青铜C5212P-3/4H高强度抗磁磷青铜C5212P-SH耐磨硬度高无气孔裂纹气泡C5212R-3/4H磷铜合金带减摩性C5212R-SH易焊接磷青铜棒C5212-3/4H高强度高弹性磷铜合金C5102-SH高弹性小铜棒C5102-3/4H日本耐疲劳铜带磷青铜C5102R-SH高机械强度磷青铜C5102R-3/4H日本磷青铜带C5102P-SH磷青铜板现货C5210R-3/4H磷青铜带/全硬磷青铜箔0.1CW456K-M耐高温磷青铜带CuSn5Pb1-R720高硬度锡磷青铜棒CuSn5Pb1-R640高韧性耐疲劳铜合金CuSn5Pb1-R550磷铜棒板化学成分CuSn5Pb1-R450高精磷青铜带高硬度CuSn5Pb1-M环保磷青铜带材CuSn4Pb4Zn4-H180强度高锡磷青铜带CuSn4Pb4Zn4-H160耐冲压磷铜带材CuSn4Pb4Zn4-H140高精密锡磷青铜板CuSn4Pb4Zn4-H115铜锡合金