Czochralski Crystal Puller Ingot Mold from China
A precision ingot mold designed for Czochralski crystal growers used in semiconductor wafer production from high-purity silicon. It shapes the monocrystalline boule during the pulling process in metallurgical crystal growth. Classified under 8454.90.00 as an ingot mold part for metallurgy.
Duty Rate — China → United States
37.5%
Rate breakdown
9903.05.3112.5%Except for products described in headings 9903.05.85–9903.05.92, articles the product of China, as provided for in U.S. note 52 to this subchapter
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]
Import Tips
• Verify material compatibility (e.g
• quartz or graphite) with HTS documentation for semiconductor-grade metallurgy
• Include technical specs proving use in monocrystalline ingot casting to avoid reclassification as general machinery parts
• Obtain supplier certifications for purity levels to meet foundry import standards