... .No airlines, few bubbles 3.High Purity, better transmision 4.Used for lighting, semiconducter Material Quartz glassPurity:More than 99.99 ... .Application:Widely used in the filed of semiconductor, metallurgy, chemical industry, electric light source, photo-communication, medical equipment, scientific instruments and so ... .31.81.84.60.40.30.599.98 Quartz Rod Used for Semiconductor