Clear Quartz Plate/Sheet: Quartz plates, SiO299.99%. The quartz plates have the features of high purity,heat resistance and low coefficient of thermal expansion. It is transparent with good transmittance of visible light(>90%). Specifications: length 10-1200mm, Width 10-800mm, thickness1-40mm. Different shape of quartz plate could be produced according to customers'requirements. The quartz plates are widely used in the fields including semiconductor, light sources, communication devices, laser instruments, optic instruments, lab instruments, electricity devices, metallurgy, medical and chemical instruments, building material, defense industry and so on.