Drawn Quartz Glass Sheet for Optical Use
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.
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Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If worked into optical elements like prisms
Finished optical glass components shift to Chapter 90, not raw sheets in 7004.
If cut to rectangular shapes
Rectangular worked sheets for technical use are profiled in 7006.
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Import Tips & Compliance
• 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.'
Related Products under HTS 7004.90.50.00
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