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2830.90.15.00/Zinc Sulfide Phosphor Precursor/Mexico

Zinc Sulfide Phosphor Precursor from Mexico

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 — Mexico → United States

12.8%

Rate breakdown

9903.05.5510%Section 301 (forced labor) — additional 10% ad valorem on products of Mexico
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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