Founded in 2009, HUIDU is one of the most professional manufacturers of LED display control system. Their product lines cover full color: synchronous/asynchronous dual-mode HD player box,asynchronous large display sending card,asynchronous medium display controller,high performance strip video screen controller, receiving card; single/double color: WIFI+U disk controller card,Ethernet ports+U disk controller card, Serial+U disk controller card,U disk controller card.