Marketing of DVR card and SPY camera in all the world Our products include stand-alone DVRs, DVR cards, CCTV cameras and accessories. Our DVR cards include GV dvr, Kodicom cards, Avermedia cards, PICO 2000, and the WDT series. Our CCTV cameras include All-In-One cameras, day / night cameras, dome cameras, CCD board cameras, wireless AV cameras, and flying disk cameras.