Unwrought Osmium Sponge from China
Porous osmium sponge from hydrogen reduction, 99.9% purity, not sintered. Unwrought form under HTS 7110.49.0050 excluding powder definition.
Duty Rate — China → United States
25%
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)
9903.05.860%Universal product exemption (U.S. note 52(b))
Import Tips
• Density < metal confirms sponge vs. powder status
• Hydrogen content analysis prevents explosive misdeclaration
• Supplier refining logs trace conflict mineral exclusion