Shenzhen SGDQ electronics Co., Ltd is a professional manufacturer of car AV system. we have more than 15 years in R&D, manufacturing and sale in car DVD player, car monitor and electronics accessories of mobile vehicles. We now in hot selling 7 inches single din in-dash navigation DVD player, double din DVD navigation monitor, 10 to 17 inches roof mount DVD player and 7 inches sun-visor monitor.