Optical Micrometer Cooling Heatsink Assembly from China
Extruded aluminum heatsink with integral fan mount for thermal management of high-power laser micrometer detectors (9031.41). Maintains optical stability during continuous measurement. Thermal part of 9031.90.54.00.
Duty Rate — China → United States
25%
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]
9903.05.860%Universal product exemption (U.S. note 52(b))
Import Tips
• Thermal resistance specs and fin geometry declared; anodizing thickness certification; prevent Chapter 84 classification as machine cooling part