Demag is a German heavy equipment manufacturer. Its business began in 1906 as a dock cranes manufacturer, under the name Deutsche Maschinenfabrik AG, or simply Demag. Founding The Demag company was formed in 1910 in Duisburg through the union of Deutsche Maschinenfabrik, Märki Engineering Co., Duisburger Mechanical Engineering AG, and the Benrather Engine works GmbH. In 1910, they designed what was then the world's largest floating crane, built for Harland & Wolff in Belfast, which would b… (More on Demag)