Kraft Pulping Digester from Mexico
A large pressure vessel used in the kraft process to cook wood chips with chemicals to separate lignin and produce pulp from fibrous cellulosic material. It operates under high temperature and pressure to break down the wood structure. Classified under HTS 8439.10.00 as machinery specifically for making pulp from cellulosic fibers.
Duty Rate — Mexico → United States
10%
Rate breakdown
9903.05.5510%Section 301 (forced labor) — additional 10% ad valorem on products of Mexico
Import Tips
• Verify pressure vessel certification (ASME or equivalent) for customs clearance and safety compliance
• Provide detailed process descriptions to confirm classification under pulp-making machinery, not chemical reactors
• Include material safety data sheets for alkaline chemicals used in kraft process to avoid misclassification