Shenzhen Greatsmart Electronics Co, Ltd is a high-tech enterprise, mainly in research, development, production and marketing of security surveillance products, including high-definition network cameras, high-definition mini-camera. HD-board camera, pen camera, U disk camera, power supply camera, clock camera, car key camera, watch camera, lighter camera, glasses camera, WIFI camera, burglar alarm, video capture cards, monitoring host security equipment and other peripheral products, is the largest, most complete variety of products, one of the most competitive manufacturers of security. Our factory manufacture maore than 7 years in Shenzhen.