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%Section 301 (forced labor) — Japan (col1 rate < 12.5 percent): MFN < 12.5% → total duty capped at 12.5%
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