Exhibiting at the Japan DX & AX Week Autumn Exhibition: On-site DX solu…
Exhibiting at the Japan DX & AX Week Autumn Exhibition: On-site DX solu…
TOSYS Co., Ltd.
株式会社TOSYSTOSYS CORPORATIONAlias
Ticker
—
Listed market
—
Country
Employees (consolidated)
778
Related companies
17
§01
Basic information
- Head office
- 1108-5 Higashiyama, Watauchi, Wakaho, Nagano, Nagano Prefecture
- Chief executive
- Sumito Kasai
- Capital
- 450,000,000 (4 100 million)
- Employees (non-consolidated)
- Employees (consolidated)
- 778 people
- Start date
- 1960-01-23
- End date
§02
Websites
§03
Business
Planning, design, construction, and maintenance of information systemsInformation system integration; development and sale of packaged softwareCloud service implementation support and operations managementPlanning, design, construction, and maintenance of general civil engineering and plumbing worksPlanning, design, construction, and maintenance of building projectsSale and installation of LED lighting fixturesDesign, construction, and maintenance of transmission lines, civil engineering works, switching equipment, and wireless equipment for telecommunications carriersSale of various information and communications equipment and office automation equipmentPlanning, design, construction, and maintenance of electrical and fire protection systemsEngineeringWired networksMobile networksElectrical and communications equipmentIT business
§04
Related companies
| Company name | Group | Parent | Subsidiary | Customer | Supplier | Alliance | Bank | Shareholder |
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| Japan After Industrial Co., Ltd. | ||||||||
| Alstar Corporation | ||||||||
| Santa Kizawa Co., Ltd. | ||||||||
| TOSIS Niigata Co., Ltd. | ||||||||
| World Eco Co., Ltd. | ||||||||
| チューリップ警備 | ||||||||
| トーシスアクティス | ||||||||
| トーシス長野 | ||||||||
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| 喜元建設 | ||||||||
| Fourth Hokke Bank Co., Ltd. |
Names without a link are companies not yet registered in OpenBizGraph
§05
Network
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§06
History
Established Niigata Telephone Construction Co., Ltd. in Niigata City, Niigata Prefecture, marking the company's founding. Its business was the construction of various telecommunications facilities.
Merged with Shinetsu Communications Construction Co., Ltd. (established in 1960). Changed the company name to East Japan System Construction Co., Ltd. and relocated its head office to Nagano City, Nagano Prefecture.
Merged with Techno Densetsu Co., Ltd. (established in 1975), strengthening market competition in electrical installation work.
Obtained ISO 9001 certification for its quality management system.
Obtained ISO 14001 certification for its environmental management system.
Relocated its head office from Minami-Chitose, Nagano City, to Watauchi, Nagano City, following the construction of a new head office building.
Receive a competition participation certificate for telecommunications equipment contracting work from NTT East Japan
Register for the Occupational Health and Safety Management System OHSAS 18001 certification
Establish the joint holding company "Comsys Holdings Co., Ltd."
Register for the Privacy Mark certification
Contract maintenance service operations from NTT East Japan
Subsidiary merger (Tulip Life and Tulip Security merge into Tulip Life Co., Ltd.)
Subsidiary merger (Tosys Nagano, Alstar, and Kigen Construction merge into Alstar Co., Ltd.)
Integration of ISO management systems (ISO 9001, ISO 14001, OHSAS 18001)
Change company name to Tosys Co., Ltd.
Subsidiary merger (Tosys Niigata and Tosys Actis merge into Tosys Niigata Co., Ltd.)
Fully acquire Kawana Nakajima Construction Co., Ltd. as a subsidiary
ISO 27001 certification for information security management system: Cloud Services Division registration
Fully acquire Japan After Industrial Co., Ltd. as a subsidiary
ISO 27001 certification: company-wide registration
Cancel Privacy Mark registration: (integrate personal information handling into ISO 27001 operations)
Subsidiary merger: Kawana Nakajima Construction Co., Ltd. absorbs Chubu Construction Industry Co., Ltd.
Cancel ISO 9001 certification (transition to internal proprietary management system)
Register ISO 45001 certification for occupational health and safety management system (transition from OHSAS 18001)
Cancel ISO 14001 certification (transition to internal proprietary management system) : Cancel ISO 45001 certification (transition to internal proprietary management system) : ISO 27001 (scope narrowed to Electrical Installation & IT Business Division, IT Business Division Sales & Systems Departments, Cloud Services Division)
§07
News
Exhibiting at the Japan DX & AX Week Autumn Exhibition: On-site DX solu…
Contribution to the Reiwa 8 Kumamoto Earthquake Relief Fund
TOSYS Inc., through its subsidiary SYSKEN and in collaboration with the Comsys Group companies, donated a total of 27.75 million yen to the Reiwa 8 Kumamoto Earthquake relief fund in Kumamoto Prefecture. This donation combined employee voluntary contributions and company contributions. We wish for the swift recovery and reconstruction of the affected area.
Microsoft 365 Business Premium and SOC Monitoring...
Microsoft 365 Business Premium and SOC Monitoring...
Establishment of the Next-Generation Talent Acquisition Incentive System
TOSYS has established the "Next-Generation Talent Acquisition Incentive System" to support the recruitment of personnel who will carry the future of the telecommunications access construction industry. The program encourages and supports the efforts of partner subcontractors in the access sector to secure and develop talent, aiming for sustainable industry development and technology succession.
Microsoft's top partner certification 'Microsoft Copilot' S…
Microsoft's top partner certification 'Microsoft Copilot' S…
Announcement of FY March 2026 Financial Summary
We announced the overview of the FY March 2026 financial results (consolidated and standalone).
Changes in Officers
TOSYS Inc. announced that the board of directors has decided on the planned changes of officers.
Certified for Nagano Prefecture's ICT Industry Location Grant Project
TOSYS Co., Ltd. obtained business certification for the "ICT Industry Location Grant Project" implemented by Nagano Prefecture. The award ceremony was held at the Nagano Prefectural Office, and Governor Morio Abe presented the certification notice.
Yamauara Co., Ltd. signs a business partnership agreement: 'Next-Generation Data Center, Regional Distributed NAGA…
Yamauara Co., Ltd. signs a business partnership agreement: 'Next-Generation Data Center, Regional Distributed NAGA…
Six companies jointly exhibit at Japan DX Week Spring Exhibition
Six companies of the Comsys Holdings Group will jointly exhibit at the Japan DX Week Spring Exhibition (Site DX EXPO) held at Tokyo Big Sight from April 8 to 10, 2026. TOSYS Inc. will display SAVREQ, MobileTorch, and MOT wearable cameras.
§08
Public records
National Tax Agency basic information8100001002894
Source: National Tax Agency Corporate Number Publication Site, basic three items
- Trade name
- 株式会社ＴＯＳＹＳ
- Trade name (kana)
- トーシス
- Name in English
- Corporation type
- 301
- Address
- 〒381-0101 長野県長野市若穂綿内字東山１１０８番地５
- Postal code
- 3810101
- Prefecture code
- 20
- City code
- 201
- Address outside Japan
- Prefecture in English
- City in English
- Address outside Japan in English
- Corporate number assignment date
- 2015-10-05
- Update date
- 2018-08-09
- Change date
- 2015-10-05
- Registry closure date
- Reason for registry closure
- Successor corporate number
- Details of the change
- Latest record
- 1
- Excluded from search
- 0
- Processing type
- 01
- Correction type
- 1
- Trade name image ID
- Address image ID
- Sequence number
- 3266037
METI gBizINFO8100001002894
Source: gBizINFO (Ministry of Economy, Trade and Industry)
- Corporate number
- 8100001002894
- Trade name
- 株式会社ＴＯＳＹＳ
- Trade name (kana)
- トーシス
- Trade name (alphabet)
- Registry closure date
- Reason for registry closure
- Registered address
- 長野県長野市若穂綿内字東山１１０８番地５
- Postal code
- 3810101
- Prefecture
- 長野県
- Prefecture code
- 20
- City or district
- 長野市
- City code
- 201
- Street address
- 若穂綿内字東山１１０８番地５
- Organisation type
- 301
- Processing type
- 01
- Correction type
- 1
- Status
- Representative
- 代表取締役 岩井 修
- Capital
- Employees
- 790
- Employees (male)
- 639
- Employees (female)
- 139
- Business summary
- 通信インフラの建設・メンテナンス ICTビジネス、電気設備工事、社会システム・土木工事等
- Website URL
- http://www.tosys.co.jp
- Year founded
- Business category
- D:建設業
- Date established
- 1960-01-23
- Unified government qualification - grade
- |B|B|
- Unified government qualification - business items
- 216|217|220|229|304|309|315
- Update date
- 2018-08-09
- Key information
- 8100001002894
§09
Sources & updates
DOMAINOwn domain：Yes
UPDATED2026-10-13 11:53 · Model: GPT-6 Luna