Blister Copper Buttons from United States
Blister copper buttons are small castings of blister copper from fire refining, used as test samples or furnace charge. They are unrefined copper with typical purity of 98-99% and gas porosity, requiring electrolytic refining before use.
Duty Rate — United States → Canada
0%
Import Tips
• Classify as unrefined copper, not as articles of heading 7419, since they are not finished products
• Provide evidence of intended use in electrolytic refining to align with the tariff item's description