1.Chemical method, 2.Grade:99.99%.99.999% 3.size ... : 1750 centi-degreeBoiling Point: 980 centi-degree6.Usage: It is primarily used in solar cells, the semiconductor materials, automatism camera control luminometer, ... photoelectric radiation, electricity radiation, manufacture of cathode radial radiation materials, paint and etc.7, Packing:Vacuum packing; Cadmium sulfide used in solar cell