HPA-tube metal halide lamps 
 Single-tube metal halide lamp (HPA) series: the tube inside the added iron and cobalt. With quality, performance and long life for the lamp, radiation efficiency, good UV output, the arc stability. The main emission UV-A band of ultraviolet radiation (300 ~ 400nm) does not produce ozone. 
 Main use: used for non-silver film (diazonium salt film, sensitive adhesive) dry film solder, wet film, liquid photosensitive resist, film, resin version, PS version, and other photographic materials copy, exposure, will map like a copy from the transparent film to UV-sensitive carrier. For HPA400S and HPA400/30S copy lights, ballast, supply the German Philips (PHILIPS) HPA400S, HPA400/30S metal halide lamp, and ballast supporting the PHILIPS, triggers, capacitors!