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6A 7A 8A Magnesia/ MgO CupelsMagnesia cupel for smelting and assaying, High temperature resistance MgO cupel.Factory magnesia crucibles cupel the gold melting cupel in ceramic.
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Fire clay Assay CrucibleLaboratory consumables fire assay crucible has incomparable excellent advantages in terms of quality, performance, appearance.Customize was acceptable. Multiple uses.