Silicon Wafer Lapping Machine Exhaust Purifier from China
Gas and particulate filtration unit for exhaust from wafer lapping equipment that grinds wafers to precise thickness tolerances, removing abrasive slurry mists and silicon fines. Classified in HTS 8421.39.0115 for its dust collection role in semiconductor wafer preparation processes as per statistical notes. Critical for downstream flatness polishing and device fabrication.
Duty Rate — China → United States
35%
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
9903.88.0125%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]
Import Tips
• Provide slurry composition analysis to confirm semiconductor-specific design
• Include cleanroom compatibility certifications (e.g
• Fed Std 209E)