Site & Connectivity, LAN/WAN Solution, in the field of corporate network integration (NI: Network Integration) and system integration business (SI: System Integration) based on it under the goal of "customer satisfaction and implementation of network standard modeling abroad" TSN Co., Ltd., which provides total solutions ranging from network consulting, installation construction, and maintenance (M/A), to design, consulting, and installation since the early 1990s when SCS (Structured Cabling System), a network infrastructure, was introduced. It is composed of professionals with more than 10 years of experience who participated in construction and accumulated network system know-how based on their technology.