| Company Name | SYSTEM IO Co., Ltd. |
| Established | January 11, 1990 |
| Representative | Dai Ikeda |
| Capital | 100,000,000 Yen |
| Stock Holder | MIT Holdings Co., Ltd. |
| Number of Employees | 154（As of July 1, 2018） |
| Number of Group Company Employees | 308（As of July 1, 2018） |
| Core Competence | Computer System Consulting. Software development for a variety of platforms (computers to mainframes). Computers and peripheral equipment sales, and computer-related activities. |
| Location | Tokyo Head Office Meiji Yasuda Seimei Mita Building 9th Floor, 3-14-10, Mita, Minato-ku, Tokyo, Japan Chiba Head Office World Business Garden Marive West 24th Floor, 2-6-1 Nakase, Mihama-ku, Chiba, Japan Osaka Branch Diapalace-Jyunketwon Room 110,1-7-8, Minamisenba, Chuo-ku, Osaka-shi, Osaka, Japan |
| Consolidated subsidiaries | NetValue Co.,Ltd BIGAL Co.,Ltd. Vision Links Myanmar Co., Ltd. |
| Main Clients | Artec Group Inc, Computer Institute of Japan, Ltd. CUBE SYSTEM INC. FUJITSU FIP CORPORATION FUJITSU KANSAI-CHUBU NET-TECH LIMITED FUJITSU LIMITED FUJITSU MISSION CRITICAL SYSTEMS LIMITED FUJITSU SOCIAL SCIENCE LABORATORY LIMITED Fuji Xerox Co., Ltd. GL Solutions Inc. Hitachi Government & Public Sector Systems, Ltd. I－NET CORP. INTEC Inc. Kumahira Co.,Ltd. Locksystem Co.,Ltd Ministry of Health, Labour and Welfare Mitsubishi Electric System & Service Co.,Ltd. Mizuho Information & Research Institute, Inc. Morpho Inc. NAKAYO, INC. Nomura Research Institute, Ltd. NTT Communications Co., Ltd. NTT COMWARE CORPORATION NTT DATA i CORPORATION NTT DOCOMO, INC. NTT Internet Co., Ltd. NUCLEAR ENGINEERING,Ltd. Panasonic Eco Solutions Networks Co., Ltd. PURPOSE CO., LTD. RIEI Co., Ltd. Security Design, Inc. Supreme Court of Japan SYNCHRO Co., LTD. TAKACHIHO KOHEKI CO., LTD. TDC SOFTWARE ENGINEERING Inc. TEIKOKU SEN－I CO.,Ltd. TOPPAN PRINTING CO., LTD. TSUZUKI DENKI CO.,LTD. Zennoh business support.Inc Listed in alphabetical order |