High-Purity Copper Balls for Wafer Lapping Machine Thrust Bearings from China
Ultra-pure copper alloy balls for thrust bearings in wafer lappers that achieve flatness tolerances critical for semiconductor fabrication. These balls are classified under tariff item 8482.91.00 as bearing balls, specifically for use in lapping machine thrust bearings.
Duty Rate — China → Canada
0%
Import Tips
• Confirm the purity and precision of the copper balls for bearing classification
• Ensure the balls meet the tolerance standards of Note 7
• Keep documentation of the end-use in semiconductor fabrication