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 and Purpose
To Happytize the world
connecting people’s aspirations to one another, spreading security and happiness
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 We Provide
-
01
Don't be afraid to take on challenges—
just take action firstInstead 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 sincerelyRegardless 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.
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
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




