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8414.90.91.80/Wafer Crystal Grinder Coolant Vacuum Pump/Japan

Wafer Crystal Grinder Coolant Vacuum Pump from Japan

Vacuum pump extracting coolant slurry from crystal grinders shaping semiconductor boules for wafer production. HTS 8414.90.91.80 per statistical note for wafer preparation grinders. Maintains grinding wheel precision during diameter reduction.

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%
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Import Tips

• Coolant composition and flow rate specs matching grinder OEM

• Particle filtration rating for semi cleanroom

• Common issue: slurry pumps misclassified under 8413.70