Shi Ying glass has extremely low coefficient of thermal expansion, high temperature resistance, excellent chemical stability, excellent electrical insulation, low and stable ultrasonic retardation, optimal ultraviolet and visible and near infrared spectral properties, and has higher mechanical properties than ordinary glass.  Therefore, it is one of the indispensable excellent materials in modern advanced technology such as space technology, atomic energy industry, national defense equipment, automation system, and semiconductor, metallurgy, chemical industry, electric light source, communication, light industry, building materials and other industries.