Tungsten Oxide Hydrodesulfurization Catalyst from China
Tungsten oxide (WO3) catalysts, promoted with nickel or cobalt, are used for hydrodesulfurization of petroleum fractions. When consisting wholly of inorganic tungsten compounds without organic binders, they qualify as catalytic preparations. This places them under tariff item 3815.90.00.
Duty Rate — China → Canada
0%
Import Tips
• Confirm the catalyst is not supported on a carrier, which would change classification to 3815.11.00
• Provide composition details to CBSA to show it is wholly inorganic
• Check for any environmental permits related to petroleum refining catalysts