Czochralski Crystal Puller Vacuum Pump from Japan
This vacuum pump is a critical replacement part for Czochralski crystal growers used in semiconductor boule production from silicon melts. It maintains the vacuum environment necessary for growing high-purity monocrystalline ingots under HTS 8414.90.91.80 as a part of semiconductor wafer manufacturing equipment. The statistical note explicitly covers such pumps in crystal growing apparatus.
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
• Provide detailed technical specs proving semiconductor manufacturing use to qualify under statistical note; include end-user certificates from fab facilities
• Ensure vacuum pump materials comply with cleanroom standards to avoid reclassification
• Common pitfall: generic pumps without semi context default to basic 8414.90 parts