Nano Synthetic Diamond Powder 1-2 Nanometers Ultrafine from China
Detonation nano-synthetic diamond powder with 1-2 nm primary particles (aggregated to 80 mesh fines), used in metal matrix composites and lubricants. HTS 7105.10.0030 covers this as synthetic diamond powder passing 0.5 mm sieve per subheading note. Enables quantum dot and biomedical coatings.
Duty Rate — China → United States
37.5%
Rate breakdown
9903.88.0325%Except as provided in headings 9903.88.13, 9903.88.18, 9903.88.33, 9903.88.34, 9903.88.35, 9903.88.36, 9903.88.37, 9903.88.38, 9903.88.40, 9903.88.41, 9903.88.43, 9903.88.45, 9903.88.46, 9903.88.48, 9903.88.56, 9903.88.64, 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(e) to this subchapter and as provided for in the subheadings enumerated in U.S. note 20(f)
9903.05.3112.5%Section 301 (forced labor) — additional 12.5% ad valorem on products of China
Import Tips
• TEM/SEM reports essential for nano claims; CBP may require aggregation state clarification
• Declare biomedical vs industrial end-use; medical device powders face FDA overlay
• Hazard comms for nano-materials; SDS must note respirable fines risk