Signal Knight Company was established in 1999, 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 andChina 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, jamming, magnifying devices, anti-wiretapping, anti-candid psy camera devices 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 magnifying products in China, and some products exported to the United States, the United Kingdom,the Middle East, Africa, and other countries and regions. We have our own specialists to design different products to meet market demands, such as we can offer different bandwidths Mobile phone signal shielding devices relay on different countries' standard. We sincerely welcome friends at home and abroad to contact us and establish business relationship with us.