High-Purity Fused Silica Lump from Mexico
Irregular lumps of high-purity fused silica obtained directly from the melting furnace, used in refractory linings or remelting. HTS 7001.00.10.00 applies as glass in the mass specifically of fused quartz/silica, excluding waste or cullet.
Duty Rate — Mexico → United States
10%
Rate breakdown
9903.05.5510%Except for products described in headings 9903.05.85–9903.05.92 and 9903.05.94, articles the product of Mexico, as provided for in U.S. note 52 to this subchapter
Import Tips
• Distinguish from cullet (7001.00.20); provide production records showing direct fusion, not recycling
• Declare OH content levels; low-hydroxyl lumps for specific optics may need additional testing
• Avoid bulk packaging pitfalls; use vermiculite for thermal protection during sea freight