Czochralski Crystal Puller Vacuum Pump from Japan
A specialized vacuum pump used in Czochralski crystal growers to create a vacuum environment for producing monocrystalline silicon boules from which semiconductor wafers are sliced. It falls under HTS 8414.10.00.00 as a vacuum pump essential for semiconductor manufacturing equipment.
Duty Rate — Japan → United States
12.5%
Rate breakdown
9903.05.4912.5%Except for products described in headings 9903.05.85–9903.05.92, articles the product of Japan, with an ad valorem (or ad valorem equivalent) rate of duty under column 1 less than 12.5 percent, as provided for in U.S. note 52 to this subchapter
Import Tips
• Verify pump specifications match vacuum levels required for crystal growth to ensure correct classification under Chapter 84
• Provide detailed end-use documentation proving semiconductor manufacturing application to avoid misclassification as general lab equipment