究め続けて、半世紀。

究め続けて、

半世紀。

技術で導く未来―。

究め続けて、半世紀。技術で導く未来―。
究め続けて、半世紀。技術で導く未来―。
究め続けて、半世紀。技術で導く未来―。

Keep and sustain our society through building and its equipment maintenance.
It’s our mission.

航空障害灯 工事
設備の画像02

We bring to market innovative solutions about building maintenance.
How can we use the building and the equipment longer, safer, and more comfortably?
We work with the highest integrity, compliance culture and respect for human rights over the 50 years.​
Based on these high technology and sincerity cultivated over 50years as experts,
we, Johnan Service, is challenging to find new innovation for achieving the client satisfactory.
Though our knowledge and technologies for the building and its equipment, Will protect the society.
That is our mission.

航空障害灯 工事 設備の画像02
RESULT

Construction record

  • All
  • Electrical work
  • Air conditioning work
  • Water supply, Drainage work
  • Maintenance, and Others
  • United Nations University | Electrical work

    United Nations University

    Electrical work
  • Tokyo Institute of Technology | Air conditioning work

    Tokyo Institute of Technology

    Air conditioning work
  • Bunkyo University Gakuen | Water supply, Drainage work

    Bunkyo University Gakuen

    Water supply, Drainage work
  • Electrical work

    The University of Tokyo

    Electrical work
  • United Nations University | Electrical work

    United Nations University

    Electrical work
  • Metropolitan Police Department | Electrical work

    Metropolitan Police Department

    Electrical work
  • Tokyo Institute of Technology | Air conditioning work

    Tokyo Institute of Technology

    Air conditioning work
  • Yokohama National University | Air conditioning work

    Yokohama National University

    Air conditioning work
  • Lumine Wing | Air conditioning work

    Lumine Wing

    Air conditioning work
  • Bunkyo University Gakuen | Water supply, Drainage work

    Bunkyo University Gakuen

    Water supply, Drainage work
  • Tokyo Metropolitan Teien Art Museum | Water supply, Drainage work

    Tokyo Metropolitan Teien Art Museum

    Water supply, Drainage work
  • Japan Student Services Organization | Water supply, Drainage work

    Japan Student Services Organization

    Water supply, Drainage work
  • Bunkyo University Gakuen | Maintenance, and Others

    Bunkyo University Gakuen

    Maintenance, and Others
  • Nihon Kogakuin College | Maintenance, and Others

    Nihon Kogakuin College

    Maintenance, and Others
CUSTOMER

Main client

  • All
  • Project about Government
  • Municipal and each Schools
  • Public Relations office | Ministry of Finance

    Ministry of Finance

  • Public Relations office | Ministry of Education, Culture, Sports, Science and Technology

    Ministry of Education, Culture, Sports, Science and Technology

  • School | Tokyo Institute of Technology

    Tokyo Institute of Technology

  • Public Relations office | Ministry of Finance

    Ministry of Finance

  • Public Relations office | Ministry of Education, Culture, Sports, Science and Technology

    Ministry of Education, Culture, Sports, Science and Technology

  • Public Relations office | Ministry of Health, Labor and Welfare

    Ministry of Health, Labor and Welfare

  • School | The University of Tokyo

    The University of Tokyo

  • School | Tokyo Institute of Technology

    Tokyo Institute of Technology

  • School | Tokyo University of Foreign Studies

    Tokyo University of Foreign Studies

CONTACT

Contact us

TEL

+81-3-5714-7400

Reception hours: Weekdays 9:00-18:00