Doosan Lentjes GmbH is part of Doosan Power Systems S.A., a subsidiary of Doosan Heavy Industries & Construction. It is a specialist engineering, design and construction business that provides proprietary waste-to-energy services and technologies, circulating fluidised bed (CFB) boiler technologies and air quality control systems (AQCS) to the thermal power generation, industrial and municipal sectors.Doosan Lentjes' main headquarters are in Ratingen, Germany.