Boule Diameter Grinder from China
Boule diameter grinders reduce crystal boules to uniform wafer-matching diameters, fitting HTS 8448.32.0090 as parts for textile fiber prep machines (8445). Per notes, used in semiconductor crystal grinding for precise wafer production.
Duty Rate — China → United States
20%
Rate breakdown
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)
9903.05.3112.5%Section 301 (forced labor) — additional 12.5% ad valorem on products of China
Import Tips
• Invoice with diameter tolerance specs (e.g
• ±0.1mm for 300mm wafers)
• Link to specific boule puller models for principal use evidence