Crystal Puller Chamber Vacuum Pump from Japan
High-vacuum pump for the growth chamber of Czochralski pullers, evacuating to ultra-low pressures for pure silicon crystal formation in semiconductor boule production. HTS 8414.59.65.95 classification for other vacuum pumps in wafer manufacturing equipment. Achieves pressures below 10^-6 torr essential for defect-free crystals.
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
• Vacuum spec sheets mandatory; EAR export control checks for high-vac tech
• Avoid misclassification as lab pump without crystal grower context