Crystal Boule Grinder for Wafer Diameter Precision from China
This grinder shapes semiconductor crystal boules to exact diameters and flats indicating conductivity, preparing them for wafer slicing in printing ancillary processes under heading 8442. Critical for flatness tolerances in photolithography printing. Classified in 8443.91.10.00 as printing machinery ancillary.
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
• Submit engineering drawings of grinding specs tied to printing tolerances for smooth clearance
• Use prior notice for high-value units over $10K