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

Cyanate Ester Resin Flakes from Japan

Thermosetting cyanate ester resin flakes for radar-transparent composites. HTS 3911.90.91.50 covers this primary form thermoset NES in Chapter 39.

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

DSC analysis mandatory to demonstrate >200°C curing without melting

Avoid 'adhesive' labeling; shifts to 3506 if prepared for bonding applications

Declare low moisture content (<0.1%) to preserve thermoset reactivity