Chitosan Flakes from Mexico
Chitosan, deacetylated chitin from crustacean shells, is a natural polymer in primary flake form for water treatment and biomedical uses. HTS 3913.90.5000 for other natural polymers.
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
• Certify deacetylation degree (typically >60%) for polymer status; shellfish origin requires allergen labeling if food contact; test for heavy metals