... used for billboard primarily,the illumination optical building,playgrounds,car parks,warehouses,medical ,cultural and other special facilities for ... RGB color change. International standard DMX512 agreement for control system. Company Profile:ShenZhen HHX electronic opto CO.,ltd.is ... tube lights,LED displays.Under the ISO9001:2008 management system ,Our products got CE,ROHS,FCC,PSE certificates and ...