3911.90.91.50/Cyanate Ester Resin Flakes/China

Cyanate Ester Resin Flakes from China

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 — China → United States

31.5%

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)

9903.03.030%Articles the product of any country, as provided for in subdivision (aa)(ii) of U.S. note 2 to this subchapter

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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