</>Build with Tariff Intelligence|Programmatic access to tariff calculations and HS code classification.Explore Developer Resources →
3911.90.35.00/Low-K Dielectric Cyanate Ester/Japan

Low-K Dielectric Cyanate Ester from Japan

Specialty hydrocarbon novolac cyanate ester with dielectric constant <2.8, per HTS 3911.90.35.00 specification. Used in high-frequency antenna applications. Maintains primary resin form for processing flexibility.

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

• Provide dielectric constant test data supporting performance claims

• Ensure formulation excludes conductive fillers

• Common misclassification as generic polysulfone 3911.90.55

Low-K Dielectric Cyanate Ester from Japan — Import Duty Rate | HTS 3911.90.35.00