... or small; 2. Shape: round 3. Thickness: from 1-400mm; 4. For optical use. Application: Used for window ... treatment, laser industries ect. Characteristics:1.high purity,2.low coefficient of thermal expansion,3.temperature resistance,4.corrosion resistance,5. ... Characteristics and superiority 1, Shape:Round, square, rectangle;2, optical silica sheet: ZS-1 ZS-2 HS / JGS1 JGS2 JGS3;3, Customer’s design ...