... 2. Multiple materials like Quartz, Fused Silica, Various Optical Glasses,Polyfluortetraethylene Materials or other Customer-Supplied Materials can be ... Two Major Categories: 1. Quartz Products Series 2.Optical Glass Products SeriesZCQ Main products: 1. ORDINARY QUARTZ PRODUCTS ... , curved reflector, filter glass and so on 6. OPTICAL WINDOW: High windows, ultra-thin window, large window, prism, lens, ...