Crystal Puller Centrifuge Spindle from China
Precision-ground spindle for driving rotors in centrifuges used with Czochralski crystal growers in semiconductor production. Classified 8421.91.60.00 as other centrifuge parts for maintaining rotational balance during boule purification steps. High-tolerance machining prevents vibration-induced defects.
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
• Supply dimensional tolerance certificates (micron-level) to confirm part specificity
• Pair with end-user letters from semiconductor fabs to prevent general machinery classification