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Welcome to Beijing Signal Knight Technology and Trade Company 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? 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 Detector, Spy Camera Scanner and relevant products. Fine workmanship, best quality, competitive price and best after-sale services are what we are proud of. Withthe development of nine years, Signal Knight has become a trustworthy supplier of the signal shielding, jamming and magni... [详细介绍]