We are leading manufacturer and exporter of low price high quality, BOYA brand color and W/B video door phone,including villa video door phone and apartment video door phone,which pass CE and IS09002 and have been exported to over 60 countries and regions,We always purchase best quality spare parts,LG CCD camera/Sony CCD cmera/CMOS camer+Best China CRT monitor/Samsung CRT monitor/Sharp CRT monitor,so we could promise that our products quality are best in China.