Copper Alloy Bearing Balls for Semiconductor Wafer Crystal Pullers from China
Precision copper alloy balls used in high-vacuum bearings of Czochralski crystal pullers for growing monocrystalline silicon boules in semiconductor manufacturing. These balls are classified under tariff item 8482.91.00 as bearing balls, specifically for their use in crystal puller mechanisms.
Duty Rate — China → Canada
0%
Import Tips
• Provide evidence of the copper alloy's precision and suitability for bearing use
• Ensure the balls meet the tolerance requirements of Note 7 to Chapter 84
• Consider the end-use declaration for semiconductor manufacturing equipment