zinc sulfide ZnS 99.99% purity Our zinc sulfide has two categories: sinter, crystal. The product in this picture is sinter tablet. Applied in Cold light coating; Decoration coating; Filter; HR coating; Infrared coating We follow critical manufacture standards, quality assurance, welcome your consultation! Specifications Summary: Zinc sulfide (Chemical formula: ZnS) 1. sinter tablet: 10*6mm;30*10mm 2. sinter granules: 1-3mm; 3-5mm 3. crystal granules: 1-40mm 4. crystal cutting piece: 10*10*10mm; 25*25*12mm 5. color: white to light yellow; light yellow; transparent 6. purity: 99.9%; 99.99% 7. package: 1 kg/ bag zinc sulfide properties: decoration coating; Filter; HR coating; Infrared coating