Olaf Karrass

Part of Rethmann SE & Co. KG, XERVON GmbH is a German company that specializes in industrial services. The company is based in Cologne, Germany. The company is trusted by customers from various industries and provide high system availability. XERVON Wind is their specialized technical service provider for wind turbines on land and at sea. The CEOs of the company are Olaf Karrass, Hans-Dieter Behrens, Carsten Lange.

BUCHEN UmweltService GmbH provides industrial cleaning services, disposal services and other waste management services. It provides industrial cleaning services that include high-pressure water jet and chemical cleaning, plate heat exchanger services, and biogas plant services, as well as tank, vessel, and column cleaning services; and tank, turnaround management, and emergency management services. The company was founded in 1844 and is headquartered in Cologne, Germany.