Tungsten Disulfide Solid Lubricant Catalyst from United States
Tungsten disulfide (WS2) nanoparticles function as both a solid lubricant and a catalyst in tribochemical reactions. As an inorganic tungsten compound, it accelerates chemical reactions and is used in aerospace and high-performance applications. This product is a catalytic preparation, not a separate chemically defined element, and falls under tariff item 3815.90.00.
Duty Rate — United States → Canada
0%
Import Tips
• Clarify the primary function (catalyst vs. lubricant) to ensure correct classification
• Provide technical data on its catalytic properties
• Verify any restrictions on tungsten compounds in Canadian regulations