ABOUT US

ジョイントグループとは

青空の下に広がる都市の街並みを一望する空撮

SINCE1947

Building on the manufacturing expertise and trust cultivated over many years, Joint Group serves as the holding company responsible for enhancing the value and driving the sustainable growth of the entire
Group.

Drawing on the expertise and strengths of each group company, we formulate management strategy and advance collaboration across businesses,
sharing technology, people, and information across the group as a whole.
By carrying the results and insights born of each business into the next challenge,
we uncover new possibilities and extend them into growth for the group.

As a corporate group that supports social infrastructure, we hold safety, quality, and trust in high regard,
and we will continue to deliver the value society needs.
And by connecting the strengths and aspirations of each group company and supporting their individual challenges,
we will give shape to new possibilities, step by step. The Joint Group will continue to cultivate value that leads to the future and to grow as a group as a whole.

MISSION

Mission and Purpose

To Happytize the world
connecting people’s aspirations to one another, spreading security and happiness

VISION

Our Ideal Vision

Supporting people as “the first source of help when they’re in trouble,” we aim to achieve a
diversified business model and
sustainable growth

VALUE

Value We Provide

  • 01

    Don't be afraid to take on challenges—
    just take action first

    Instead of waiting for the right answer,
    take action, learn, and apply what you’ve learned to the next challenge.

  • 02

    Building Trust Through Speed

    Quick decision-making and responsiveness
    lead to peace of mind and value.

  • 03

    Always think from the customer’s perspective

    Rather than focusing on our own convenience,
    we base our decisions on what is “best for the other person.”

  • 04

    Respect others and
    engage with them sincerely

    Regardless of one’s position or role,
    treat others with respect as human beings.

  • 05

    Spreading Gratitude

    Achievements don't come from one person alone.
    Show your gratitude through words and actions.

  • 06

    Working with Our Customers to Create a Perfect

    Rather than simply carrying out assigned tasks,
    we think together and work together to create value.

GROUP COMPANY

Overview of the Joint Group

Joint Group

Connecting people and technology,
creating sustainable value

Setting out how we exist as a group
目指すべき姿

各コーポレートの役割

  • As our founding business, it underpins the group's earnings base
    and sustains our technology and trust

    Joint Kogyo

    Developing metal products for social infrastructure and,
    through manufacturing, delivering products and services
    that carry the way forward to the next generation

  • Through our franchise business,
    we deploy a business model
    that can be replicated

    enjoint

    Through photo studio operations,
    we provide services that preserve
    family moments for the future

  • Through the welfare field,
    we create new social value

    Sun Joint

    Supporting work opportunities and places to live,
    we work to build an environment
    where people can live with peace of mind

  • Through our AI business,
    we take on new technological frontiers

    Kyufu

    Supporting AI adoption to drive operational efficiency
    and digital transformation, aiming for implementation
    that holds up in real-world practice

HISTORY

History

The Joint Group traces its path back to Kokaji Kikai Seisakusho, founded in 1947.
Joint Kogyo Co., Ltd. was established in 1979 and merged with the original company in 2011. We have grown alongside the technology that supports urban infrastructure development.

Building on that technology and trust, we now operate under a holding company structure, expanding beyond manufacturing into welfare, education, training, and more.
As social issues such as population decline and aging infrastructure grow more complex, we draw on the combined strengths of the group to pursue sustainable value creation.
Valuing human harmony as we always have, we will continue as a corporate group connecting people, companies, and communities, building social infrastructure we can be proud to pass on.

  • 1947

    Kokaji Kikai Seisakusho established

  • 1976

    Began manufacturing and sales of
    segment joint hardware

  • 1979

    Joint Kogyo
    Incorporated as a joint-stock company

  • 1992

    Manufacture and sale of joint hardware for
    the Trans-Tokyo Bay Highway project

  • 2001

    Began sales of jointly developed products

  • 2015

    Sale of joint hardware (developed product) for the Tokyo Gaikan Expressway project

  • 2023

    Founder Motokatsu Kojima retires as Representative Director; Shohei Kojima appointed Representative Director

  • 2025

    enjoint Inc. established

  • 2025

    Sun Joint Co., Ltd. established

  • 2025年6月

    有限会社休符を新事業開始

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