We are manufacturing many kinds of DVR Systems with several functions as belows :   1. Standard Models of DVR System  options of Camera and Channel Numbers  (Stand-Alone Type)   2. Sophiscated DVR system with functional   options   3. for Remote Multiple Video Conference   4. for Home Security System with Remote Alarm   Function, etc.   5. for Inside Vehicles   (Bus, Ship,Cash Transport, Police Car, etc.)   6. Others