| Company name | Group | Parent | Subsidiary | Customer | Supplier | Alliance | Bank | Shareholder |
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| Hokkaido System Engineering Co., Ltd. | ||||||||
| BACeLL法律会計事務所 | ||||||||
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| 扶桑電機工業 | ||||||||
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| Japan Inspection Q&A Corporation | ||||||||
| 松青木監査法人(現有限責任監査法人トーマツ) | ||||||||
| 株式会社アドヴァン | ||||||||
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| 株式会社第一勧業銀行(現株式会社みずほ銀行) | ||||||||
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| 泉澤会計事務所 | ||||||||
| 社会ソリューショングループ | ||||||||
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Fuso Tsushin Kogyo Co., Ltd. was established in Makicho, Chuo-ku, Tokyo (now 2-chome Yaesu, Chuo-ku), and began the telephone equipment business.
Established in March 1948
Following the enactment of the Public Telecommunications Act, the handling of private branch telephone exchange equipment was permitted to be privatized. The National PBX Association (now the Information and Communications Equipment Association) was established, and the company joined it.
Kamata Plant (now the Training Center) was opened in Imaizumicho, Ota-ku, Tokyo (now Yaguchi, Ota-ku, Tokyo) to manufacture equipment and materials for telecommunications facilities.
An electronic computer sales division was established, and sales activities began.
Fuso Facom Center Co., Ltd. (now Fujitsu Japan) was established as a joint venture with Fujitsu Communication Equipment Manufacturing Co., Ltd. (now Fujitsu Limited), and contracted computing services began.
The telecommunications and electrical facilities construction divisions were separated, and Fuso Tsushin Kogyo Co., Ltd. was established as a subsidiary.
Separated the telecommunications equipment construction and electrical equipment construction divisions and established Fuso Tsushin Kōji Co., Ltd. as a subsidiary to provide more advanced technical services
As the adoption of electronic computers increased and the company sought to improve customer service, the electronic computer sales division was separated and Fuso Denshi Co., Ltd. was established as a subsidiary.
To operate as a specialist dealer in comprehensive communications and information systems, Fuso Denshi Co., Ltd. and Fuso Co., Ltd. were absorbed through a merger, and the company name was changed to Fuso Dentsu Co., Ltd.
Merged Fuso Denshi Co., Ltd. and Fuso Co., Ltd. and changed the company name to Fuso Dentsu Co., Ltd. to provide services tailored to customer needs as a specialist distributor of comprehensive telecommunications and information systems
Fuso Tsushin Kogyo Co., Ltd. was absorbed through a merger to establish a comprehensive information and communications service structure.
Over-the-counter stock registration (public listing)
A training center was opened in Yaguchi, Ota-ku, Tokyo, to improve employees' skills.
Listed on the Second Section of the Tokyo Stock Exchange.
Obtained ISO 9001 and ISO 9002 certification for the systems engineering division.
Obtained ISO 9001 certification for the network systems division.
Obtained PrivacyMark certification.
The head office moved to Tsukiji, Chuo-ku, Tokyo.
Fuso Tokyo First Center (IDC) opened.
Obtained ISO 14001 certification at all business locations
Opened the Fuso Tokyo Second Center (IDC)
Opened the Fuso Third Center (IDC)
Obtained ISO/IEC 27001 certification at business locations in the Kansai region
Launched the “ICT Convenience Services” brand, bringing together our proven services that support ICT infrastructure used by customers nationwide
Transitioned to a company with an Audit and Supervisory Committee
Organized and launched our original product brands as the product and package brand “Encyclo” and the service brand “Sasa L”
Established a Nomination and Compensation Committee
Certified as a Health and Productivity Management Outstanding Organization (Large Enterprise Category)
Moved from the Second Section to the Standard Market of the Tokyo Stock Exchange following the exchange’s restructuring of its market segments
Made Hokkaido System Engineering Co., Ltd. a wholly owned subsidiary to expand our municipal government business
Made System Make Co., Ltd. a wholly owned subsidiary to expand our business fields and strengthen our development capabilities
On September 8, 2026, Fusō Dentsu received the 'Platinum Kurumin Certification' from the Minister of Health, Labour and Welfare. The company was praised for its continued efforts to support work–family balance, including the introduction of a flextime work system, the creation and dissemination of a childcare leave guidebook, and the establishment of a support fund for childcare leave recipients.
Fuso Dentsu, in line with optimizing its solution portfolio and strengthening investment in growth areas and strategic domains, will discontinue new sales of Encyclo WMS, Encyclo Bistron, and drawing scanning services as of October 31, 2026. After the discontinuation, we will advance the transition to optimal services, including co‑creation with partner companies. Support for existing customers will continue based on the termination schedule set for each product/service.
Fusō Dentsu Co., Ltd. has formulated a policy to prevent customer harassment and sexual harassment against job seekers and others in response to the amendment of the Comprehensive Promotion of Labor Measures Act effective October 1, 2026. The details of the policy can be found on the company's website via the provided link.
As a DX-certified business, Fusodentsu Co., Ltd. has pursued digital transformation across the company and published content summarizing its results. Under its medium-term management plan, it is advancing proposal-based business and digital transformation inside and outside the company, while promoting co-creation with customers and strengthening organizational capabilities. The company plans to further enhance its DX support and value creation for customers.
An investigation conducted with an external security specialist confirmed that the incident was caused by a third party’s unauthorized use of credentials; no other suspicious activity was found. A shared folder contained personal information, including names, addresses, and phone numbers, and 26,489 records belonging to business partners and their contacts may have been exposed. No payment information was included. The company is implementing measures to prevent recurrence and contacting affected parties individually.
Fuso Tsushin Co., Ltd. expressed its condolences for those who lost their lives in the 2026 Kumamoto earthquake and reported donating ¥1 million in relief funds to support affected people and recovery and reconstruction efforts. Its head office is in Chuo-ku, Tokyo. Inquiries can be directed to the Corporate Planning Office of the Administration Division.
Fuso Dentsu confirmed unauthorized access to a shared folder of their cloud storage on July 15, 2026, and announced that some information may have been leaked. They immediately stopped access, conducted investigations, contacted relevant parties, and are implementing measures to prevent recurrence.
Fusō Denchū Co., Ltd. has developed a strategy map that organizes and visualizes health management goals and initiatives to promote employee health and performance.
Fuso Dentsu will start providing "BO-SAInavi Difesa" with enhanced disaster prevention information distribution functions from April 2026, achieving multilingual support and emergency alert email linkage.
Fuso Dentsu Inc. announced that it has renewed its certification under the DX certification system as of March 1, 2026, and the certification will be valid until February 28, 2028.