Change of Management

Dear Business Partners,

Today, we would like to inform you that our long-standing Managing Director, Mr. Joachim Buchen, will retire on Dec. 31st, 2022.

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ÖKOPROFIT - We successfully particiated

Together with the district of Siegen-Wittgenstein and 12 other companies, we set out to focus on topics such as climate protection, resource management, sustainability and carbon footprint in summer 2021.

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Innovation Seal

Since 2014, the Stifterverband für die Deutsche Wissenschaft e.V. honors research-based companies for their special responsibility for the state and society with the seal “Innovative through Research”.

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CERABITE® - Shock wave technology for the cleaning of demanding castings

We now also offer this process as contract processing at our new company location with its convenient, motorway connection.


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CLUSTREG® - A new reclamation process for inorganically bonded foundry sands

Reduction of emissions and efficient use of ressources are no longer empty notions but represent an integral part of innovations.


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Press Release - New R+D project

KLEIN cooperates with Fraunhofer in the research and development of a recylcing concept especially for PEM fuel cells.


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