In the city on Lake Constance, Stefan Zürcher and Bruno Faoro founded Trewitax almost 25 years ago. The two-man business, from which Bruno Faoro moved to Zurich in the meantime, has grown into a team with currently 14 employees. The headquarters of Trewitax Kreuzlingen AG is the historic Villa Belle-Vue, just a few minutes' walk from the inner-city border with the Federal Republic.