HID lamp means high intensity discharge lamp. Luminescence theory of the HID filled the HID luminous pipe with xe and metal halide. Blazing with pressure. the pipe will produce a steady arc. discharge the electricity and illuminate. HID consuming power is 35W, which is half of the consumption of the tungsten lamp (65W), so it saves the fuel. The luminous flux of HID is the triple of the tungsten light. Which can the 3000 lumen. It is brighter than the tungsten lamp. The life span of HID is about 2500 hours. Which us ten times of that of the tungsten lamp. At present, we are one of leading manufacturer of halogen lamp and HID xenon lamp in the china. Nowadays, there are five kinds of color temperature for you choice, 4,700K,6,000K,8,000K,10,000K,12,000K..MoreOver, when you buy our factory HID lamp, you could enjoy one-year guarantee with normal use. So, please don抰 worry about the quality. If any lamp and ballast does not work period of one-year, you could replace it from our factory. the main production series include H1,H3,H4,H7,9004,9005,9006,9007 etc. if you are interested in any series or relate to this field, please do not hesitate to contact us in order to get the more technical parameter. We guarantee that will offer the best quality and most competitive price to customer from all over the world. Welcome you visit our website at: http:/ or . If you have any question, please submit it to , or .cn.. We will offer the full services for 5 days one week and 8 hours one day for you. you prompt reply will get the greatly appreciate. thanks and best regards, you faithfully, Mr. JOE