CUSTOMS TARIFF - SCHEDULE
5. Throughout the Nomenclature, the expression "glass" includes fused quartz and other fused silica. Subheading Note. 1. For the purpose of subheadings 7013.22, 7013.33, 7013.41 and 7013.91, the expression "lead crystal" means only glass having a minimum lead monoxide (PbO) content by weight of 24%.
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