8481.90.90.40/Float Zone Crystal Grower Vacuum Valve/China

Float Zone Crystal Grower Vacuum Valve from China

Vacuum control valve for float zone methods in growing high-purity semiconductor crystals from which wafers are sliced. Classified as HTS 8481.90.9040 for its role as a 8481.20 valve part in crystal grower equipment.

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

• Certify vacuum ratings (e.g

• 10^-8 Torr) matching statistical note equipment specs

• Pair with process flow diagrams showing valve integration in growers

• Avoid re-export issues by tracking dual-use tech declarations