亚洲综合一区二区无码精品-国产精品无码av在线一区-国产精品日韩亚洲综合网-欧美日韩一区二区三区三级

Optical performance：

   Quartz glass is a single glassy material composed of silicon dioxide (SIO2) fused. As an important industrial material, it is widely used in various fields such as semiconductor electronics, point light sources, metallurgy, chemical industry, building materials, optics, and other industrial and modern science and technology.