k-best has 30 years of expertise in developing and manufacturing all kinds of rf/microwave modules, subsystems, and systems. our main products: communication radio system: for telecom, security. radar: for commercial, industry, security uav: for commercial, surveillance, border security. iot smart city: smart manufacturing, smart transportation, smart long-term care, smart building, smart energy. our products feature long distance, anti interferences and jamming, high security, high reliability, and fast delivery.