The formation of quartz sheet is the result of its melt high temperature viscosity is very high. Used in the production of semiconductors, electric light sources, semi-conducting communication devices, lasers, optical instruments, laboratory instruments, electrical equipment, medical equipment and high temperature corrosion-resistant chemical instruments, chemical, electronics, metallurgy, building materials and national defense and other industries, the application is very wide. Jiangsu Donghai County JiuJiu quartz science and technology production of quartz sheet of high precision, no bubbles, flat and smooth surface, corrosion resistance, good light transmission, especially for optical, electronic, chemical, military and other optical instruments observation window window.