Czochralski Crystal Puller from Germany
A specialized centrifuge apparatus used in semiconductor manufacturing to grow monocrystalline silicon boules by pulling crystals from molten silicon via the Czochralski method. It falls under HTS 8421.39.0115 as dust collection and air purification equipment because it incorporates integrated filtering systems to remove impurities and particulates from the inert gas atmosphere during crystal growth. This ensures ultra-clean conditions essential for high-purity semiconductor production.
Duty Rate — Germany → United States
10%
Rate breakdown
9903.03.0110%Except for products described in headings 9903.03.02–9903.03.11, articles the product of any country, as provided for in subdivision (aa) of U.S. note 2 to this subchapter
Import Tips
• Verify equipment includes certified HEPA or ULPA filters for gas purification to qualify under this subheading; provide manufacturer specs
• Include end-use documentation proving semiconductor manufacturing application to avoid reclassification