Products
C4250: 銅:87~90. 錫:1.5~3.0 鋅:餘量.
1/4H ~ SH
25%
295 ~ 870
C425M: 銅:86~88 錫:2.5~4.0 鋅:餘量
C4450: 銅:70~73 錫:0.8~1.2 鋅:餘量
