Nanjing Yexiang Technology Development Co., Ltd. Has been committed to intelligent security advanced overall solutions to provide as well as the Internet of Things security system warning, alarm product development, design, production, sales and brand operation services. The company is a national key high-tech enterprise, through the national GB/T19001-2016/ISO9001:2015,GB/T24001-2016/ISO14001:2015,GB/T45001-2020/ISO45001:2018 certification, products through the ROHS certification, the EU CE certification. The company has been awarded 39 national patents, 14 software copyrights and 11 trademark registration certificates. The company′s main products anti-shear alarm fence, integrated intrusion detection fence alarm system, optical fiber vibration intrusion detector, security enclosed management system, widely used in petroleum, chemical, military, border defense, railroad, highway, prison, airport, government, water conservancy, mining, power plants, cultural relics, attractions, schools, villas, neighborhoods and other types of key prevention areas.