We, SDT systems, are specialized in LED display and controller including LED driver IC for any type of full coloer display.We provides " LED display such as LED module,Cluster,Bar type, together with Controller systems".We have a lot of excperience on LED display manufature,Installation with good performance, High reliablity.* LED full color display & LED cluster for outdoor and indoor. Mediafacde bar and cluster display . Art LED display.Our anoter business is Capacitive Stylus Touch pen for handwriting and drawing for Ipad, Galaxy and smart Phone.* Stylus Touch pen for Ipad and Smart Phone touch pen for handwriting and drawing.Thanks a lot.SDT systems.