CENTROTEC Sustainable AG engages in the provision of energy-saving technology and system solutions for buildings. It operates through the following segments: Climate Systems, Gas Fuel Systems, and Medical Technology and Engineering Plastics. The Climate Systems segment offers heating systems; heat recovery and air handling ventilation; solar thermal; and biogas processing. The Gas Fuel Systems segment comprises air and water tightness for sustainable construction; exhaust systems for heating boilers; and air piping systems for heat recovery ventilation. The Medical Technology and Engineering Plastics segment provides medical technology equipment, medical technology components, and engineering plastics. The company was founded by Guido Alexander Krass in 1994 and is headquartered in Brilon, Germany.