Walnut Shell Flour Abrasive Grade from Mexico
Note: While typically from nuts, certain wood flours mimic this; fine walnut-like hardwood flour for gentle abrasives. HTS 4405.00.00.00 for precision polishing powders. 400 grit equivalent particle size.
Duty Rate — Mexico → United States
13.2%
Rate breakdown
9903.05.5510%Section 301 (forced labor) — additional 10% ad valorem on products of Mexico
Import Tips
• Hardness (Mohs scale) certification for abrasive applications
• Angular particle analysis distinguishes from spherical blasting media
• Contaminant levels (<50 ppm metals) for precision polishing