Commercial Cobalt Oxide Black from China
Commercial cobalt oxide black is an impure Co3O4 grade used in porcelain enamels and catalysts. The tariff item explicitly includes 'commercial cobalt oxides,' covering lower-purity grades. It meets Chapter 28's scope, and the chapter notes do not exclude it.
Duty Rate — China → Canada
0%
Import Tips
• Provide a certificate of analysis showing the Co3O4 content and impurities to confirm it qualifies as a commercial cobalt oxide
• If used in enamels or catalysts, declare the end use
• Keep records of the production process to support classification