Thonzer International (Hong Kong )Co.,LTD is founded in 1998 and established Shenzhen branch company ShenZhen Thonzer Electronics Co., LTD in 2008,is a professional manufacturer and designer and sales of Car video and audio products ,such as Car DVD /Car GPS /Car Monitor/Parking Sensor and Car GPS Tracker ! Till now, our factory has 4 production lines and have own R&D dept and our staff have rich experience of more than 10 years in this line of Car video and audio . Our products are ...