Silicon Hairspring for Luxury Chronometers from Japan
Advanced silicon hairspring for high-end chronometer-grade watches, offering antimagnetic properties and improved isochronism. Classified under HTS 9114.90.34.00 as a hairspring for watch movements per chapter definition of time-regulating devices.
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
• Include material analysis certificates proving silicon construction; avoids precious metal misclassification
• Document end-use as watch movements only; silicon hairsprings must meet watch dimension specs
• Beware of set classification if shipped with balance wheel - may shift to complete movement heading 9108