Shenzhen LongGreat Electronic Technology Co., Ltd was established in 2008. We are a professional&high-tech enterprise of LED application research area,do R&D, production, sales and after-sales as a whole service for LED control system. Main product: LED asynchronous display control system,wireless control system, LED dispaly software, etc. Communications: Serial port,U-disk, ethernet/LAN port,wireless transmission,GPRS transfer,GSM transfer,etc. We keep working to upgrade&intelligentize products, insisting on providing customers with the best quality control cards and experienced technical support.