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Gold |
Au-1: The content of Gold is above 99.99%, the total
content of Ag, Cu, Fe, Pb, Bi, and Sb is below 0.01%.
Au-2: The content of Gold is above 99.95%, the total content
of Ag, Cu, Fe, Pb, Bi, and Sb is below 0.05%.
Au-3: The content of Gold is above 99.90%, the total content
of Ag, Cu, Fe, Pb, Bi, and Sb is below 0.10%.
Note: Technical standard GB/T 4134-1989. |
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