Drone Defense, Drone Detection manufacturer / supplier in China, offering Low-Probability-of-Intercept Drone Detection System Operating at 4km Range Across 300-6000MHz Spectrum, Rapid-Response Suitcase Kit: 5km Wireless Signal Security with 300-6000MHz Spectrum Navigation, Integrated 5km RF Detection System: 300MHz-6GHz Sweep, Navigation Tracking, Portable Suitcase Design and so on.