... 1200 degreeC Clear quartz plate,quartz plate,quartz sheet,quartz disc, quartz panel Technique index sign : 1.Material:Quartz glass JGS1.JGS2.JGS3 ... metallurgy, optical instruments, stage lighting industry, high-temperature window.The product's craft forerunner, quantity is dependable ... the price is low.Details:High-temperature optical quartz glass mainly used in the military, metallurgic and ...