UV block quartz tube is clear fused quartz glass doped with cerium to block ultraviolet. This glass block all vacuum ultraviolet, nearly all UV-C, UV-B and emit minimum UV-A. It is an ideal material for lamps requiring maximum visible light and to avoid UV exposure to people and materials. UV tubing becomes more and more popular in the market for the unique characteristic. Nowdays, more and more cars are using plastic front windows. The plastic front windows may be discolored under the exposure of deep ultraviolet. The automobile lamps made with UV block quartz glass tube can stop deep UV exposure to plastic windows to keep the windows out of becoming "yellow" discoloration and emit super "white" visible light at the same time. It is ideal for automobile lamps.