... junction temperature below 65°c to make sure lifetime of lamp over 50000H.4.Apply optimal fin design which combined ... make sure a high efficiency,stability and dust free characteristics5.The lamp body is fashionable and modern.6.Humanizing design make installation ... Tunnel,Subway,mine,garage, workshop,toll gate,shopping center,industrial illumination,and so on. Other details:Item NO. WM-GL-A30WWorking ...