... 5.No scratches Light cover and Lamp cover by Pyrex1. Light cover material: Optical glass,Pyrex,Borofloat2. Techniques of Light cover: by Moulding,Grinding, Polishing3 ... cover: used as sight glass,glass window,light cover,lamp cover,front lens,led lens,Glass lens6. Application of light cover and lamp cover: system, Electronics, Industries Light cover ...