3911.90.35.00/Low-K Dielectric Cyanate Ester/China

Low-K Dielectric Cyanate Ester from China

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 — China → United States

37.5%

Rate breakdown

9903.88.0225%Except as provided in headings 9903.88.12, 9903.88.17, 9903.88.20, 9903.88.54, 9903.88.59, 9903.88.61, 9903.88.63, 9903.88.66, 9903.88.67, 9903.88.68, 9903.88.69, or 9903.88.70, articles the product of China, as provided for in U.S. note 20(c) to this subchapter and as provided for in the subheadings enumerated in U.S. note 20(d)

9903.05.3112.5%Section 301 (forced labor) — additional 12.5% ad valorem on products of China

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Import Tips

• Provide dielectric constant test data supporting performance claims

• Ensure formulation excludes conductive fillers

• Common misclassification as generic polysulfone 3911.90.55