Welcome to Beijing Signal Knight Technology and Trade Company LTD Signal Knight Company was established in 2005, and based in Beijing city. Signal Knight is a professional enterprise integrating signal shielding, jamming and magnifying products design, development, production and sales into a whole body. Meanwhile, Signal Knight is one of partners of China Ministry of National Defense and China Ministry of State Security, and also acquired the certification of the National Ministry of Public Security. Signal Knight's principle business is engaged in national security products, such as Signal Shielding, Signal Jamming, Signal Boosting, Signal Amplifying devices; Anti-wiretapping devices, Anti-hidden camera, Bug Detectors, Spy Camera Scanners and relevant products.