Polyphthalamide (PPA) Powder from Mexico
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 — Mexico → United States
16.5%
Rate breakdown
9903.05.5510%Section 301 (forced labor) — additional 10% ad valorem on products of Mexico
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