1.high purity 99.99% 2.abrasion resistance 3.anti-corrosion 4.protect electrode 5. ... High purity&heating-resistanceOD range 1.2mm-360mm, Silicon Dioxide>99.995%Transmittance of visible light>90% a ) except the incorporation of ... , medical equipment,fry&baking equipment, sterilizing device7. technical datasilicon dioxide>99.95%transmittance of visible light>90%,OH content less than ...