HORN GmbH The company HORN was founded 1947 in Singen/ Htwl. and expanded soon to a leading manufacturer of silicone-based flexible heating elements. Since the early 60s we produce in close cooperation with our customers specific solutions as well as large-scale products with highest quality and safety standards. In 1970 the company moved to its current production site to Gottmadingen, which was expanded in 1985 by plant 2. Today, HORN has more than 100 employees on modern workstations.