Alumina Ceramic Ball Valve for Wafer Polishing Slurry from Japan
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 — Japan → United States
12.5%
Rate breakdown
9903.05.4912.5%Except for products described in headings 9903.05.85–9903.05.92, articles the product of Japan, with an ad valorem (or ad valorem equivalent) rate of duty under column 1 less than 12.5 percent, as provided for in U.S. note 52 to this subchapter
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