Polystyrene-Based Cement Dispersant from Mexico
A powdered dispersant with modified polystyrene (aromatic polymer) exceeding 5% by weight, added to concrete to prevent clumping and enhance uniformity. Classified in 3824.40.10.00 for its aromatic-modified substances in concrete preparations. Ideal for high-performance ready-mix applications.
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
• Provide manufacturer specs confirming polystyrene aromatic content; check REACH compliance if from EU
• Avoid bulk packaging that could imply industrial chemical rather than prepared additive