Shenzhen SDG Tektel Communication Technology Co., Ltd. is a high-tech subsidiary of Shenzhen SDG Information Co., Ltd., established over two decades ago with a focus on information communication and smart grid solutions. The company specializes in R&D, system integration, and technical services for wireless communication, optical transmission, intelligent networking, integrated access, and power monitoring. Its solutions span smart distribution and consumption communication networks based on TD-LTE private wireless broadband, EPON, and industrial Ethernet switches, as well as optical transport networks including SDH/MSTP, OTN, and PTN. For fixed-line communication, it offers softswitching systems and intelligent PCM access devices. Tektel also provides comprehensive smart grid monitoring systems, such as online fault monitoring for distribution lines, transmission line condition monitoring, substation environment and video surveillance, and power and environmental monitoring. As a key partner of ZTE in the government and enterprise market, Tektel serves as the exclusive distributor of ZTE’s TD-LTE wireless broadband products for the electric power industry. Its solutions have been