Detailed offer Description Quartz plate is a special glass that contains silicon dioxide . Our quartz glass board is made from natural quartz after the process of melting and fine grinding . It is transparent and colorless, contains no air bubble and no processing trade will be found . it is purity is controlled to the grade of PPM. It has the great performance such as how heat expansion rate, high temperature proof , chemical stability , perfect insulation, stable ultrasonic delay , best spectrum and better materials in the field of high technology such as space technology, atomic energy industry , national defense outfit, automatic system, semiconductor, metallurgy, chemical, electric lighting, communication, light industry and building materials.