Change in the building material world

In 1990, the ROTEC Company, Raw Resource Technology GmbH was founded and thus became the legal successor of the Klöckner GmbH in Duisburg. The origins of this special material treatment got their start in the sixties. The professional development, application research and marketing did not take place till the founding of RO-TEC. Since then ROTEC is known in the building material world as the specialist for the refinement of natural silicate. The company promotes and refines this ecologically amazing material with modern technology to the innovative lightweight aggregate ROTOCELL and the ecologically valuable substrate ROTOPOR. Thus, coveted aggregates are derived from the natural raw material for highly thermo-insulating bricks, substrates for green roofs and aggregates for the dry mortar industry and for the manufacturers of construction chemical products. Perpet-ual researching is continually opening up new application areas, such as specialty grains for filters.
ROTEC GmbH & Co. KG is owned in equal parts by the following well-known and established companies: KANN Baustoffwerke and Dr. Carl Riffer Baustoffwerke GmbH & Co. KG.