Polyphthalamide (PPA) Powder from Canada
Polyphthalamide (PPA) in powder form, a semi-aromatic polyamide not specifically named elsewhere, qualifies under 3908.90.70.00 for other polyamides in primary forms. High heat resistance makes it suitable for automotive under-hood parts.
Duty Rate — Canada → United States
16.5%
Rate breakdown
9903.05.2910%Except for products described in headings 9903.05.85–9903.05.93, articles the product of Canada, as provided for in U.S. note 52 to this subchapter
Import Tips
• Obtain third-party analysis proving no specific subheading applies (e.g
• not PA-6,6)
• Avoid bulk packaging that suggests compounding; use bags for primary resin identification