Precision Copper Balls for Float Zone Crystal Grower Bearings from China
High-purity copper alloy balls for vacuum bearings in float zone crystal growers that produce semiconductor boules from polycrystalline silicon rods. These balls are classified under tariff item 8482.91.00 as bearing balls for use in crystal grower bearings.
Duty Rate — China → Canada
0%
Import Tips
• Provide documentation on the copper alloy's purity and precision for bearing classification
• Ensure the balls meet the tolerance requirements of Note 7
• Keep records of the end-use in semiconductor manufacturing