Annealed Refined Copper Ribbon for Heat Sinks from United States
Soft-annealed refined copper ribbon coil, 0.8 mm thick and 480 mm wide, used for heat sink fins. The annealing process enhances thermal conductivity without altering the refined copper composition. It falls under this tariff item as refined copper in coils with a thickness exceeding 0.15 mm.
Duty Rate — United States → Canada
0%
Import Tips
• Document the annealing process and copper purity (at least 99.85%) for CBSA verification
• Confirm the width does not exceed the coil format and thickness is above 0.15 mm
• Keep records of the heat treatment to justify the refined copper classification