Corporate History
As a leader in the telecommunications construction industry, the COMSYS Group has grown by contributing to the construction and operation of Japan’s information and communications infrastructure, which boasts the world’s highest level of quality.
We will contribute to the realization of a sustainable society by continuing to support people’s safer, more secure and affluent lives through the construction of telecommunications and social infrastructure.
Comsys Holdings Corporation is established as a pure holding company through a joint stock transfer between Nippon Comsys Corporation, Co., Ltd. Sanwa Elec , and East Japan System Construction Co., Ltd.

Delisted from the First Section of Tokyo Stock Exchange and Osaka Stock Exchange
(currently Osaka Exchange)
Established COMSYS Shared Services Corporation and outsource common operations
Converted COMSYS Shared Services into a wholly owned consolidated subsidiary
The information systems business was spun off to form COMSYS JOHO SYSTEM
Changed the unit share number from 1,000 shares to 100 shares
Business integration with TSUKEN through a share exchange
Delisted from Osaka Stock Exchange owing to its stock market integration with that of the Tokyo Stock Exchange
Changed from a company with an audit and advisory board to a company with an audit and supervisory committee
Business integration with three companies, NDS, SYSKEN, and Hokuriku Denwa Kouji through a stock exchange
Changed its listing on the Tokyo Stock Exchange (TSE) from the First Section to the Prime Market segment