COMSYS Holdings Corporation is a Japan-based holding company primarily engaged in the provision of construction services for telecommunications facilities, as well as information services. Its Nippon COMSYS Corporation group is engaged in the construction of telecommunications facilities focusing on Nippon Telegraph and Telephone Corporation (NTT). SANWA COMSYS Engineering Corporation group is engaged in the construction of telecommunications facilities focusing on new common carriers (NCCs). TOSYS Corporation group and TSUKEN Corporation group operate telecommunications facility construction business in Shinetsu and Hokkaido areas, respectively. Comsys JOHO System Corporation group is involved in the information processing business. In addition, the Company also involves in the sales of building materials. As of March 31, 2014, the Company had 43 subsidiaries and eight associated companies.