Polyimide Cellular Foam Sheets from Mexico
High-temperature resistant cellular polyimide foam sheets for aerospace thermal insulation. Classified HTS 3921.19.00 as other plastics cellular sheets. Maintains properties up to 300°C.
Duty Rate — Mexico → United States
16.5%
Rate breakdown
9903.05.5510%Section 301 (forced labor) — additional 10% ad valorem on products of Mexico
Import Tips
• Technical data verifying polyimide chemistry essential for proper 'other plastics' classification
• Industrial end-use documentation prevents consumer article misclassification
• Excludes fittings or composites that would shift headings