Crystal Grower Crucible Rotation Mechanism from United States
A motorized rotation drive for quartz crucibles in Czochralski crystal pullers, ensuring uniform dopant distribution during silicon ingot growth. It is a part of the crystal pulling machines of tariff item 8479.89.10, critical for consistent resistivity across the boule diameter.
Duty Rate — United States → Canada
0%
Import Tips
• Declare this as a part of the crystal puller (8479.89.10) and include the machine's model number in the commercial invoice
• If the mechanism includes an electric motor, verify whether the motor is separately classified under Chapter 85
• Ensure the rotation drive is not a general-purpose motor, which would be classified elsewhere