</>Build with Tariff Intelligence|Programmatic access to tariff calculations and HS code classification.Explore Developer Resources →
9002.90.40.00/Interferometer Reference Mirror/Japan

Interferometer Reference Mirror from Japan

A super-polished flat mirror mounted in a vibration-isolated holder for use as a reference surface in laser interferometers for precision metrology. Classified in HTS 9002.90.40.00 for its role in mounted optical measuring instruments.

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%
Calculate with your customs valueVerify classification with AI

Import Tips

• Certify flatness specs (e.g

• lambda/20); specify instrument compatibility; declare value based on optical quality not substrate