The iodine gallium lamp series are a new kind of metal halide lamp filled with gallium,halide argon, xenon, etc. The gallium has strong radiation in purple light area with its content of 67 percent of visible light. It has abundant radiation in the spectrum range of 300-450nm with peak value of 420nm.They were widely used for protruding printing, PS plate making, and mark sign, electric circuit printing plate, etc. The light is good for its steady light source, short time needed for plate making, long life time for use and low costs of electric power. Now the 220V series,380V quick start series are both available.