Wafer Grinder Coolant Chiller Coils from China
Evaporator coils for chillers maintaining coolant at 18-22°C in semiconductor wafer grinders. Prevents thermal distortion during precision grinding per statistical note (a)(ii)(A). 8419.90.95 cooling process parts.
Duty Rate — China → United States
41.5%
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
• Specify coil materials resistant to glycol-water coolant corrosion
• Document BTU capacity matched to specific grinder heat loads
• Avoid general refrigeration parts declaration (8418); prove semiconductor integration