Polystyrene Compounding Base Resin from Canada
Narrow molecular weight distribution polystyrene resin designed for compounding, imported in primary form under HTS 3903.19.00.00. Serves as base for custom blends in electronics and packaging industries.
Duty Rate — Canada → United States
16.5%
Rate breakdown
9903.05.2910%Section 301 (forced labor) — additional 10% ad valorem on products of Canada
Import Tips
• Document polydispersity index (<2.0) to confirm unmodified homopolymer status
• Separate from additives in shipping to prevent blend reclassification
• CBP may test for fillers; ensure pure resin declaration