| OD Range 1.5mm-160mm; Silicon Dioxide over99.95%; Excellent Visual and chemical performance; high thermo-stability; anticorrosive,Thansmittance of visible light over90%.Deh-rodyolization available upon customer request,OH content less than 20ppm,15ppm,10ppm,5ppm,or 2ppm.Our products are used in semiconductor, lighting and electric heating industry. |