Float Zone Crystal Vacuum Pump from China
High-capacity rotary vacuum pump for float zone crystal growth systems exceeding 746 kW, used to process silicon into monocrystalline form for semiconductor wafers. Essential for maintaining zone melting under vacuum to achieve ultra-pure crystals free of impurities. Falls under 8414.80.20.75 as other vacuum pumps for semiconductor material growth over the power limit.
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
• Submit float zone method process descriptions matching statistical note (a)(i) for proper semiconductor classification
• Certify vacuum levels and power consumption via test reports to confirm .75 subheading eligibility
• Avoid bulk packaging classification by documenting retail-ready semiconductor equipment status