Semiconductor Wafer Crystal Grinder Dust Collector from China
Integrated filtering and purification system attached to crystal grinders used to shape semiconductor boules to precise diameters, collecting diamond slurry and silicon dust particles from the air stream. Falls under HTS 8421.39.0115 as specialized dust collection equipment for maintaining clean air in wafer preparation environments. Essential for preventing airborne contaminants from affecting subsequent wafer processing.
Duty Rate — China → United States
37.5%
Rate breakdown
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]
9903.05.3112.5%Section 301 (forced labor) — additional 12.5% ad valorem on products of China
Import Tips
• Provide airflow rate and filter efficiency data (e.g
• 99.999% particle removal) for classification support
• Pair with boule grinder invoices to demonstrate integral use in semiconductor process