Optical Flint Glass Masses from Japan
Dense flint glass in large, unworked masses with high refractive index, melted for precision optics. Classified in HTS 7001.00.20.00 as other glass in the mass, prior to any shaping or polishing.
Duty Rate — Japan → United States
12.5%
Rate breakdown
9903.05.4912.5%Section 301 (forced labor) — Japan (col1 rate < 12.5 percent): MFN < 12.5% → total duty capped at 12.5%
Import Tips
• Provide refractive index specs in entry docs to prove optical grade without 'worked' status
• Segregate from lead crystal batches (24%+ PbO) to avoid 7013 confusion
• Audit risk high if undervalued; use transaction value with melt cost proofs