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Polyimide Prepolymer Powder from Germany

Thermosetting polyimide prepolymer powder in primary form for aerospace composites. Under 3911.90.91.50 as NES thermosetting product, classified by predominant imide monomer units.

Duty Rate — Germany → United States

10%

Rate breakdown

9903.05.3910%Section 301 (forced labor) — European Union member state (col1 rate < 10 percent): MFN < 10% → total duty capped at 10%

Import Tips

Include cure cycle instructions proving thermoset transformation from prepolymer state

Test for 95% imide content to rule out copolymer shifts per subheading note (a)(2)

Comply with ITAR if for defense applications; separate from tariff classification

Polyimide Prepolymer Powder from Germany — Import Duty Rate | HTS 3911.90.91.50