Electric-Fused Quartz Mass from Mexico
Bulk mass of quartz glass produced by electric arc fusion, known for low bubble content in high-end applications. It is 'glass in the mass of fused quartz' under HTS 7001.00.10.00, as processes before annealing do not constitute working.
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
• Include fusion method certification; electric vs flame affects bubble and strain specs
• Prevent contamination; ship in cleanroom-sealed bags to maintain purity
• Harmonize invoices with HTS; specify 'not drawn, blown, or cut beyond mass'