High-Purity Lamellar Copper for EMI Shielding from United States
High-purity lamellar copper for EMI shielding consists of 99.9% pure copper flakes engineered for use in electromagnetic interference shielding paints for electronics housings. These flakes, being of refined copper with a lamellar structure, fall under tariff item 7406.20.00.
Duty Rate — United States → Canada
0%
Import Tips
• Ensure the copper purity is documented, as refined copper (≥99.85%) is classified under this item, while lower purity may affect the alloy classification
• If the flakes are incorporated into a paint formulation, verify whether the product should be classified as a prepared pigment under Chapter 32
• Provide technical specifications to the CBSA to support the classification