8414.80.20.75/Czochralski Crystal Puller/China

Czochralski Crystal Puller from China

A high-power vacuum pump system used in Czochralski crystal growers to produce monocrystalline silicon boules exceeding 746 kW for semiconductor wafer manufacturing. This equipment maintains ultra-high vacuum conditions during the crystal pulling process to ensure purity and quality of semiconductor materials. Classified under 8414.80.20.75 as a vacuum pump integral to semiconductor processing exceeding the power threshold.

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]
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Import Tips

• Verify power rating documentation exceeds 746 kW with manufacturer specs to avoid reclassification to lower power subheadings

• Include detailed end-use statements confirming semiconductor manufacturing application for statistical note compliance

• Prepare for CBP scrutiny on vacuum pump integration; provide assembly diagrams showing non-separability from crystal grower