Czochralski Crystal Puller Vacuum Pump from Japan
A centrifugal vacuum pump used in Czochralski crystal growers to create the high-vacuum environment necessary for producing monocrystalline silicon boules from which semiconductor wafers are sliced. It falls under HTS 8414.80.20.15 as a centrifugal air or vacuum pump integral to semiconductor manufacturing equipment for crystal growth. This classification aligns with statistical notes for wafer 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 semiconductor use to avoid reclassification; provide manufacturer certifications linking to crystal grower systems; ensure vacuum ratings and materials are documented for CBP review