1, Purity: 4N ( 99.99%); 
2, Technics (Process): CVD (chemical vapor deposition) Zn + S =ZnS; 
3, Analysis: GDMS; XRD (Please find the COA attached ); 
* 4N ( All impurity elements is below 100 PPM ); 
4, Packing: 1Kg/bottle; 
5, Size: Granule, lump, Powder (-325mesh; Micron powder); 
6, Delivery: 10-20days; 
7, Service: Supply MSDS, COA and free sample;