Tongding Interconnection Information Co Ltd is a China-based company principally engaged in the communication cable and communication equipment business, power cable business and network security business. The Company's optoelectronic communications business mainly provides optical cables and optical communications equipment, including optical fiber preforms, optical fibers, optical cables, communication cables, railway signal cables, power cables, software defined network (SDN) equipment, optical distribution network (ODN) equipment, storage and server equipment, big data collection and analysis equipment, communication power equipment and other products. The network security business mainly provides network visualization products, including splitters, Internet data center (IDC)/Internet service provider (ISP) information security management systems, security services and other products.