Micronized Mullite Flour from China
> Micronized mullite flour with a D50 below 5 μm is a fine powder used as a filler in technical ceramics and casting slips. It is processed by grinding, which is allowed under Chapter 25 notes. It remains under tariff item 2508.60.00 as processed mullite powder.
Duty Rate — China → Canada
0%
Import Tips
• > Verify that no chemical additives are present that would change the classification
• State the D50 particle size and mullite content on the packing list