Clear MBS Copolymer Beads for PVC Toughening from Mexico
High-clarity MBS copolymer beads in primary form, with precise 95%+ comonomer composition of methyl methacrylate, butadiene, and styrene. This material is explicitly named in subheading 3903.90.1000 for import classification. Essential for producing transparent, impact-resistant PVC sheets and films.
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
• Require supplier COA (Certificate of Analysis) specifying exact monomer ratios; segregate from generic styrene copolymers during customs exam
• Pitfall: misdeclaration as polystyrene (3903.11) leads to penalties - always specify MBS designation