Boule Flatting Grinder Filtration System from China
Air purification module for grinders that create orientation flats on semiconductor crystal boules to indicate resistivity and doping type. Captures grinding dust to protect wafer yield; under HTS 8421.39.0115 as dust collection for statistical note (b)(ii)(A) equipment. Vital for accurate wafer identification in fabs.
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
• Document flat positioning tolerances (±0.5°) linkage to filtration performance
• OEM integration proof essential