Precision Ultrasonic Lapping Machine for Metals UML-300 from China
The UML-300 employs ultrasonic-assisted lapping to achieve mirror finishes on metal surfaces such as hardened steel dies and molds, removing microscopic material layers through abrasive slurry vibration. Classified under HTS 8456.20.10 for its ultrasonic process tailored to metalworking, it supports high-precision applications in tool and die making. This avoids overlap with mechanical lappers in other headings.
Duty Rate — China → United States
38.5%
Rate breakdown
9903.03.0110%Except for products described in headings 9903.03.02–9903.03.11, articles the product of any country, as provided for in subdivision (aa) of U.S. note 2 to this subchapter
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]
Import Tips
• Include vibration amplitude and frequency certifications in import docs to prove ultrasonic operation; watch for pitfalls like classifying as standard lapping under 8460 if vibration not emphasized
• Partner with certified freight forwarders experienced in high-tech machinery