Servo-Controlled Electrical Valve for Wafer Grinder Diamond Slurry from China
Servo-actuated electrical valve maintains constant diamond slurry pressure in wafer grinders for semiconductor boule preparation. Classified HTS 8481.80.9025 for precision electrical valves in wafer manufacturing.
Duty Rate — China → United States
39.5%
Rate breakdown
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)
9903.05.3112.5%Section 301 (forced labor) — additional 12.5% ad valorem on products of China
Import Tips
• Specify servo response time <100ms for dynamic slurry control
• Include diamond abrasive concentration test data for wear qualification
• Use nitrogen-purged shipping to maintain slurry compatibility