Crystal Boule Grinder Vacuum Extraction Pump
This pump is a part of crystal grinders that shape semiconductor boules to precise diameters and grind orientation flats, per statistical note (a)(ii)(A). It extracts grinding dust and maintains cleanroom vacuum conditions during boule preparation for wafer slicing. Classified as other vacuum pump parts under HTS 8414.90.91 for semiconductor equipment.
Import Duty Rates by Country of Origin
| Origin Country | MFN Rate | Ch.99 Surcharges | Total Effective Rate |
|---|---|---|---|
| 🇨🇳China | Free | +35.0% | 35% |
| 🇲🇽Mexico | Free | +10.0% | 10% |
| 🇨🇦Canada | Free | +10.0% | 10% |
| 🇩🇪Germany | Free | +10.0% | 10% |
| 🇯🇵Japan | Free | +10.0% | 10% |
More Specific Codes
This product may fall under a more specific subheading:
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If used as general industrial dust collector
Dust extraction equipment without semiconductor specificity falls under filtering machinery.
If for metallurgical grinding applications
Similar pumps for metal processing classified differently.
If includes precision measurement capability
Grinding equipment with integrated gauging shifts to measuring instruments.
Not sure which classification is right?
Our AI classifier can analyze your specific product and recommend the correct HTS code with confidence.
Import Tips & Compliance
• Include grinder blueprint showing pump integration for flat grinding and diameter control functions
• Certify compatibility with silicon/gallium arsenide boules to meet statistical note material specifications
Related Products under HTS 8414.90.91
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This vacuum pump is a critical part of Czochralski crystal growers used to produce monocrystalline silicon boules for semiconductor wafers. It maintains the ultra-high vacuum environment necessary during the crystal pulling process to ensure purity and quality. Classified under HTS 8414.90.91 as a part of vacuum pumps specialized for semiconductor manufacturing equipment.
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