Flame-Polished Fused Silica Mass from Japan
Fused silica in mass form with flame-polished surfaces for minimal defects, used in fiber optic preform production. Remains in HTS 7001.00.10.00 as polishing here is pre-annealing process per chapter note.
Duty Rate — Japan → United States
12.5%
Rate breakdown
9903.05.4912.5%Except for products described in headings 9903.05.85–9903.05.92, articles the product of Japan, with an ad valorem (or ad valorem equivalent) rate of duty under column 1 less than 12.5 percent, as provided for in U.S. note 52 to this subchapter
Import Tips
• ,Measure surface roughness (Ra <0.1um); critical for customs purity verification
• Batch traceability required; link to end-use permits for dual-use tech exports