Drawn Quartz Glass Sheet for Optical Use from Canada
High-purity drawn fused quartz glass sheets for optical instruments and UV applications. Included in 7004.90.50.00 as drawn glass sheets per chapter note defining 'glass' to include fused quartz.
Duty Rate — Canada → United States
15%
Rate breakdown
9903.05.2910%Except for products described in headings 9903.05.85–9903.05.93, articles the product of Canada, as provided for in U.S. note 52 to this subchapter
Import Tips
• Submit silica content lab reports (>99% for quartz) to confirm fused silica status under chapter notes
• Declare dimensions accurately; large sheets may have quota implications not in base code
• Watch for non-reflecting coatings, which are allowed but must not constitute 'otherwise worked.'