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详细信息 Product Name: Refractory Gold and Silver Fire Assay Magnesia Cupel Crucible Material: Bone Ash Shape: Brick Type: Refractory Material Feature: Long Time Materials Refractoriness (?): 1580< Refractoriness< 1770 Size: 6A, 7A, 7as, 7al, 8A and 9
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