Your partner for thermal production sytems

ONEJOON Core Teams around the globe can handle local projects on their own with an organisation of Sales, Project Management, Basic Engineering, Commissioning, Site Management and Service.

  • represented in 4 countries with 9 locations worldwide
  • 240 employees worldwide (2020)
  • more than 100 design engineers, researchers and developers
  • quality made by ONEJOON with own factories in Germany, Korea and China
  • ongoing culture of innovation ensured by German and Korea Test Center and Research & Development Department
  • experienced Project Management Team with project sizes up to 50 Mio €
  • thermal process equipment up to 3000 °C and turnkey thermal process production lines
Our Locations

We're right where you need us.

Company Profile


ONEJOON Co, Ltd. is the head of the group of companies and has three branches in South Korea.

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Company Profile


ONEJOON GmbH is a German plant construction company with the German locations Bovenden, near Göttingen and Böblingen near Stuttgart.

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Company Profile


ONEJOON (Zhejiang) Co. Ltd. has a subsidiary in Shanghai and its own production facility in Zheijiang, China.

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Company Profile


ONEJOON Inc. is the newest member of the ONEJOON Group.
With locations in Alpharetta, GA and Oakdale, MN we extend our product and service offerings into North America. 

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ONEJOON Service Technischer Support Grafik 840x560
Our service portfolio
in detail
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Zahnraeder Als Illustration Produktentwicklung Und Test 420x280
Test Center
Development and optimisation of heat treatment processes read more
Onejoon Simulation Teaser 420x280
Sophisticated furnace solutions with the aid of CFD simulations read more
Heat treatment plants

More than 120 years experience in industrial furnace construction

ONEJOON GmbH Bovenden, Germany +49 551 820 830 - 0