... Quartz Glass 1.Thermostable optical material glass 2.Type:JGS1.JGS2.JGS3 3.used in the military, metallurgic and instruments Quartz ... 8.TemperedProduct elucidation: Used in military, lasers, metallurgy, optical instruments, stage lighting industry, high-temperature window.The product ... quick, the price is low.Details:High-temperature optical quartz glass mainly used in the military, metallurgic and ...