... bubble no airline 5. non-discolouring photovoltaic use Clear quartz glass rod at competitive price1, quartz glass rod2,tight siz tolearance3,Resistance 1100 degree, 2020 f4 ... 3-300mm clear quartz tube(high purity,good heating resistance,low OH), UV-stop quartz tube, red quartz tube, processed quartz tube, quartz rod, quartz plate, gray quartz tube ...