High-Purity Copper Balls for Wafer Lapping Machine Thrust Bearings from China
Ultra-pure copper alloy balls for thrust bearings in wafer lappers that achieve flatness tolerances critical for semiconductor fabrication. Classified HTS 8482.91.0015 per statistical note 6 for copper balls in wafer preparation equipment. Provides contamination-free load distribution during lapping.
Duty Rate — China → United States
41.9%
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
• Require particle count certification (<10 particles >0.5μm)
• Submit lapping machine blueprints showing bearing placement
• Monitor for oxidation—specify inert atmosphere packaging