Thermostatic Control Valve for Crystal Grower Temperature Regulation from China
A self-operating thermostatic valve that regulates coolant flow to maintain exact temperatures in Czochralski crystal growers for silicon boule production. Classified under HTS 8481.80.9015 for its self-operating temperature control function in semiconductor material growth equipment. Ensures thermal stability critical for monocrystalline semiconductor purity.
Duty Rate — China → United States
39.5%
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
9903.88.0325%Except as provided in headings 9903.88.13, 9903.88.18, 9903.88.33, 9903.88.34, 9903.88.35, 9903.88.36, 9903.88.37, 9903.88.38, 9903.88.40, 9903.88.41, 9903.88.43, 9903.88.45, 9903.88.46, 9903.88.48, 9903.88.56, 9903.88.64, 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(e) to this subchapter and as provided for in the subheadings enumerated in U.S. note 20(f)
Import Tips
• Provide process flow diagrams showing temperature control application in semiconductor crystal growth to support classification
• Label as 'self-operating' explicitly; solenoid valves classify differently under 8481.80.1020