Pressure Regulator Valve for Float Zone Crystal Puller from China
Self-operating valve maintains inert gas pressure in float zone crystal pullers for high-purity silicon production. HTS 8481.80.9015 classification for pressure control in semiconductor crystal growing equipment using float zone method. Prevents contamination during monocrystalline boule formation.
Duty Rate — China → United States
39.5%
Rate breakdown
9903.88.0325%Except as provided in headings 9903.88.13, 9903.88.18, 9903.88.33, 9903.88.34, 9903.88.35, 9903.88.36, 9903.88.37, 9903.88.38, 9903.88.40, 9903.88.41, 9903.88.43, 9903.88.45, 9903.88.46, 9903.88.48, 9903.88.56, 9903.88.64, 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(e) to this subchapter and as provided for in the subheadings enumerated in U.S. note 20(f)
9903.05.3112.5%Section 301 (forced labor) — additional 12.5% ad valorem on products of China
Import Tips
• Certify compatibility with argon/hydrogen mixtures used in float zone processes
• Demonstrate self-operation via no-external-power requirement in technical data sheets