Czochralski Crystal Puller from China
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 — China → United States
37.5%
Rate breakdown
9903.88.0125%Except as provided in headings 9903.88.05, 9903.88.06, 9903.88.07, 9903.88.08, 9903.88.10, 9903.88.11, 9903.88.14, 9903.88.19, 9903.88.50, 9903.88.52, 9903.88.58, 9903.88.60, 9903.88.62, 9903.88.66, 9903.88.67, 9903.88.68, or 9903.88.69, articles the product of China, as provided for in U.S. note 20(a) to this subchapter and as provided for in the subheadings enumerated in U.S. note 20(b) [to this subchapter]
9903.05.3112.5%Section 301 (forced labor) — additional 12.5% ad valorem on products of China
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