... Max heat-resistant temperature: 1200 degreeC4.SiO2 :99.99%Characteristics and superiority 1, Shape:Round, square, rectangle;2, optical silica ... 2 HS / JGS1 JGS2 JGS3;3, Customer’s design and tailor made are welcome. Big or small, the max ... antireflective film, gold, aluminum, silver series quartz glass and quartz UV filters, curved reflector, filter glass and so on.A variety of optical silica sheet ...