Synthetic Fused Silica Boule from Canada
A cylindrical boule of synthetic fused silica created via flame hydrolysis or electric fusion, serving as stock material for semiconductor and UV optic manufacturing. Classified in HTS 7001.00.10.00 because it is glass in the mass of fused silica, unworked except for annealing.
Duty Rate — Canada → United States
10%
Rate breakdown
9903.03.0110%Except for products described in headings 9903.03.02–9903.03.11, articles the product of any country, as provided for in subdivision (aa) of U.S. note 2 to this subchapter
Import Tips
• Obtain supplier specs confirming electric or flame fusion process to distinguish from natural quartz
• Ensure boule diameter and weight documentation; oversized pieces must still qualify as 'in the mass' pre-working
• Comply with REACH-like certifications for trace metals, as semiconductor grades demand ultra-low impurities