Alumina Ceramic Ball Valve for Wafer Polishing Slurry from China
High-wear alumina ceramic ball valve, hand-operated, for precise slurry flow control in wafer polishers achieving critical surface flatness for fabrication. Under HTS 8481.90.5000 as ceramic 'other materials' part for semiconductor wafer prep.
Duty Rate — China → United States
20.5%
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
9903.88.157.5%Except as provided in headings 9903.88.39, 9903.88.42, 9903.88.44, 9903.88.47, 9903.88.49, 9903.88.51, 9903.88.53, 9903.88.55, 9903.88.57, 9903.88.65, 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(r) to this subchapter and as provided for in the subheadings enumerated in U.S. note 20(s)
Import Tips
• Test and certify ceramic purity (>99.5% Al2O3) for polish slurry compatibility
• Include wafer flatness tolerance specs tying to statistical note (c)
• Avoid declaring as 'lab valve' to prevent Chapter 90 shift