Wafer Lapping Machine from China
Wafer lapping equipment that removes material from semiconductor wafers using abrasive slurries to achieve precise thickness uniformity. Under HTS 8448.20.50 as accessories for heading 8444 machines in semiconductor wafer preparation. Essential for total thickness variation (TTV) control before polishing.
Duty Rate — China → United States
23.3%
Rate breakdown
9903.05.3112.5%Except for products described in headings 9903.05.85–9903.05.92, articles the product of China, as provided for in U.S. note 52 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
• Specify slurry compatibility with silicon/gallium arsenide in technical docs
• Prove TTV control capability under 1 micron for proper classification