In April 1985, the KANN and Riffer companies founded the Bisotherm building material distribution company based in Mülheim-Kärlich (Germany). Both companies have set industrial standards in Europe and continue to make great strides through modern production and processing facilities.
The Bisotherm the team and the shareholders, KANN and Riffer have never departed from their successful concept to value both innovation and quality while paying special attention to service.
The reward for these efforts is reflected in a broad product range, from which building shells of any type, size and use can be made possible, future ready and built economically.
The three massive "pillars", that comprise: innovation, quality and service, are the reasons why Bisotherm can now call itself the number one in lightweight concrete-wall building materials.