Oil Drilling Grade CMC LV Powder from Canada
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 — Canada → United States
16.4%
Rate breakdown
9903.05.2910%Except for products described in headings 9903.05.85–9903.05.93, articles the product of Canada, as provided for in U.S. note 52 to this subchapter
Import Tips
• Include filtration and yield tests in COA; HAZMAT docs for industrial chemicals
• Pitfall: drilling fluid labeling causing 3824 shift