HongKong YUZHOU Limited .products : IP/AHD ( outdoor ,indoor waterproof cctv cameras. NVR/DVR kits .PTZ speed dome ) Video door bell . Intelligent fingerprint lock .
HongKong YUZHOU Limited .products : IP/AHD ( outdoor ,indoor waterproof cctv cameras. NVR/DVR kits .PTZ speed dome ) Video door bell . Intelligent fingerprint lock .