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AR
项目 优级纯
(GR)
含金量 ≥47.8%
铁(Fe)% ≤0.001
镍(Ni)% ≤0.001
锌(Zn)% ≤0.001
银(Ag)% ≤0.002
铜(Cu)% ≤0.001
铅(Pb)% ≤0.001