Zinc Sulfide Phosphor Precursor from Canada
Refined zinc sulfide used to produce ZnS:Cu/Au phosphors for electroluminescent panels. Classified in HTS 2830.90.1500 as other zinc sulfide before doping/activation. Meets inorganic compound criteria excluding finished luminophores.
Duty Rate — Canada → United States
12.8%
Rate breakdown
9903.05.2910%Except for products described in headings 9903.05.85–9903.05.93, articles the product of Canada, as provided for in U.S. note 52 to this subchapter
Import Tips
• Document as 'precursor, undoped' to distinguish from finished phosphors (3206)
• Provide emission spectra potential (pre-activation) in technical data
• Ensure no organic stabilizers present per Chapter 28 organo-inorganic exclusion