Ultra-High Purity Luminescent Zinc Sulfide (5N Grade) from Mexico
5N (99.999%) luminescent grade zinc sulfide, exceeding the 99.99% threshold, for advanced phosphor applications in lasers. Covered by HTS 2830.90.1000 as zinc sulfide luminescent grade with specified minimum purity. Chapter notes confirm inclusion as chemically defined.
Duty Rate — Mexico → United States
10%
Rate breakdown
9903.05.5510%Except for products described in headings 9903.05.85–9903.05.92 and 9903.05.94, articles the product of Mexico, as provided for in U.S. note 52 to this subchapter
Import Tips
• Use ICP-MS analysis reports for sub-ppm impurity proof; high-value goods need detailed valuation support
• ITAR/EAR checks for defense end-uses