HID, complete appellation is High Intensity Discharge，mainly composed by HID lamps, ballasts, power supply adaptable wiring and accessories. The HID lamp tube is filled with various kinds of chemical gas; among them mostly are noble gases, such as xenon and iodide etc. The ballast will generate voltage of vehicle from 12V to 23 KV during the instant of turning on power, which makes xenon blaze strong light between tow poles and reach high lightness.