Oil Drilling Grade CMC LV Powder from Mexico
Low-viscosity CMC powder ≥90% CMC for oil well drilling fluids as viscosifier. Primary form under HTS 3912.31.00.10 meeting polymer weight rules. High-temperature stable grade.
Duty Rate — Mexico → United States
16.4%
Rate breakdown
9903.05.5510%Section 301 (forced labor) — additional 10% ad valorem on products of Mexico
Import Tips
• Include filtration and yield tests in COA; HAZMAT docs for industrial chemicals
• Pitfall: drilling fluid labeling causing 3824 shift