Kyanite Flour -325 Mesh from Mexico
Kyanite flour ground to -325 mesh (<44 microns), used as a filler in porcelain insulators and spark plugs. This ground kyanite is classified under tariff item 2508.50.00 as it has only been mechanically ground, which is permitted processing under Chapter 25 notes.
Duty Rate — Mexico → Canada
0%
Import Tips
• Ensure the grinding process does not introduce additives or binders, which would change the classification
• Provide particle size distribution data to confirm the product is simply ground kyanite
• If the flour is used in electrical applications, verify it does not qualify as an optical element or other Chapter 90 product