... light shade. lamp cover1.Raw material:Borosilicate glass,pyrex.2.Processing:by molding3.Glass propery:Risistence to high temperature shock4.Inside ... quality:clear and transparent5Function of glass lens:guide of light direction.6.Application:Lighting system, ... ,molder lens,spot lens,light shade,light cover,glass sheet,glass cover,glass shade. lamp cover borosilicate ...