STIELOW GmbH is a German company specializing in the manufacture of dehumidifiers, humidifiers, and water treatment systems. Established in 1952, it is recognized as Germany's first manufacturer of portable dehumidifiers. The company's headquarters are located in Frankfurt am Main, with a production facility in Beselich-Obertiefenbach, Hesse. STIELOW prides itself on in-house research, development, and design, offering a diverse range of over 25 appliance types in more than 300 variants. Their products are distributed worldwide, serving various industrial and commercial applications.