... no bubble no airline 5. non-discolouring photovoltaic clear fused quartz glass rod1, fused quartz glass rod2,tight siz tolearance3,Resistance 1100 degree, 2020 ... 5 types and 70 speculations, ranging from 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, and so on. And ...