Trix is a German company that originally made Trix metal construction sets. One of its co-founders was Stephan Bing, the son of the pioneer toy-maker industrialist Ignaz Bing. In 1935 the company began producing the electrically powered model trains that it became famous for, under the Trix Express label. Prior to the outbreak of World War II the company produced a small range of AC (14 V) powered three rail loco models (e.g. 20/51, 20/52, 20/53, 20/54) running on bakelite rails.