Zinc Sulfide Crystals from Japan
Zinc sulfide (ZnS) in crystalline form is used in optical coatings, phosphors, and semiconductors. Classified under HTS 2830.90.90.00 as a polysulfide or other sulfide compound meeting chemical definition criteria.
Duty Rate — Japan → United States
12.5%
Rate breakdown
9903.05.4912.5%Section 301 (forced labor) — Japan (col1 rate < 12.5 percent): MFN < 12.5% → total duty capped at 12.5%
Import Tips
• Include lab test results proving it's pure ZnS, not doped for electronics (which may go to 3818)
• Comply with REACH-like regulations for zinc compounds; declare intended end-use
• Package in inert atmosphere to prevent oxidation during shipping