Czochralski Crystal Puller Ingot Mold from China
A specialized ingot mold designed for use in Czochralski crystal growers and pullers to produce monocrystalline silicon boules for semiconductor wafers. It falls under HTS 8454.90.0080 as a part of casting machines used in metallurgy for high-purity semiconductor material production. The mold ensures precise thermal gradients during the crystal growth process.
Duty Rate — China → United States
35%
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
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 with silicon melting (e.g
• quartz or graphite) for classification; provide technical specs proving semiconductor end-use to avoid reclassification
• Ensure exporter certificates match HTS description to prevent customs holds