GB/T 469

GB/T 469 (铅锭)· GB (中国) · 6 种材料

名称	材料组别
Pb99.940	铅	chevron_right
Pb99.970	铅	chevron_right
Pb99.985	铅	chevron_right
Pb99.990	铅	chevron_right
Pb99.994	铅	chevron_right
Pb99.996	铅	chevron_right