Ching Kong Technology Co., Limited. is original manufacturer of electronic security devices and telecom Antenna products.like the multi band RF jammer,Vehicular Jamming system, Portable/Tactical Jammers, Stationary jammer, Bomb jammers, RF jammers, Cellphone jammers, GPS Jammers, WiFi/Bluetooth signal Jammers，Custom/Embassy Jamming Solutions, Portable Jammer system ,Prison Jamming system, Handheld Jammers Solutions,Drone Signal Jammer,UAV Detector&Defend System and so on, for the protection of troop transportation, Military and P olice checkpoints, large Governmental establishments, Bomb Disposal Squads and VIP convoys. Ching Kong are also offering a lot of wireless devices of Cell phone Signal Amplifier(Booster),VCO, GPS/Spy Camera detector,Voice recorder Jammer,etc,