We are a manufacturer who produce all kinds of quartz glass tubes.We are located in Donghai,Lianyungang,Jiangsu,China.Donghai--China most famous place of supplying raw quartz/silica materials and crystals,gets a lot of factories together manufacturing quartz/silica products. We can supply: 1)clear fused quartz glass tubes 2)UV-STOP quartz glass tubes and quartz capillary 3)opaque quartz glass tubes 4)quartz rod 5)milky quartz tube ...