Dongguan(Hongkong) Eaglevision Technology Co.,Ltd, a manufacturer of Video Door Phone which very good at VDP IC Board and intercoming quality. As you know, Our engineer team with long time professional workingexperience, 2 of them has over 9 years software working experience, and another one was with 3 years in hardware. Our major point of Video Door Phone is offering the clear and loud intercom quality !