Tungsten Dioxide (WO2) Nanopowder from China
Tungsten dioxide (WO2) nanopowder is a chemically defined tungsten oxide used in infrared shielding coatings and gas sensing elements. Its nanoparticle form does not alter its classification as an inorganic oxide under Chapter 28. It falls under tariff item 2825.90.00 as 'Other' metal oxides, consistent with the chapter's coverage of separate chemically defined compounds.
Duty Rate — China → Canada
0%
Import Tips
• Declare the product as tungsten dioxide (WO2) nanopowder, including particle size and purity in the commercial invoice
• Confirm with the CBSA whether the nanopowder form requires any special documentation, such as safety data sheets
• Check if the product qualifies for duty-free treatment under a free trade agreement by providing a valid certificate of origin