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polished surface molybdenum crucible for vacuum coating Products detail: Purity(%) Ag Ni P Cu Pb N <0.0001 <0.0005 <0.001 <0.0001 <0.0001 <0.002 Si Mg Ca Sn Ba Cd <0.001 <0.0001 <0.001 <0.0001 <0.0003 ...