Double-Side Wafer Grinder from China
Double-side grinders simultaneously process both wafer surfaces for thickness uniformity and parallelism prior to polishing. Under HTS 8443.99.5050 for semiconductor wafer grinding per statistical note (a)(ii)(C). Achieves <1 micron TTV across 300mm wafers.
Duty Rate — China → United States
17.5%
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
9903.88.157.5%Except as provided in headings 9903.88.39, 9903.88.42, 9903.88.44, 9903.88.47, 9903.88.49, 9903.88.51, 9903.88.53, 9903.88.55, 9903.88.57, 9903.88.65, 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(r) to this subchapter and as provided for in the subheadings enumerated in U.S. note 20(s)
Import Tips
• Include carrier plate specifications showing multi-wafer batch processing
• Require semiconductor material qualification certificates
• Differentiate from general 8460 grinders via throughput specs