Roto Frank Holding AG consists of three divisions: The division Roto Roof System Technology (DST) offers professional fabricators and trading companies the best premium-quality solutions for roof windows, equipment and stairs. The division Roto Window and Door Technology (FTT) has the world’s best expertise on the manufacture of hardware and the integration of hardware in windows and doors. The division Roto Professional Service (RPS) offers service - exclusively in Germany - throughout the entire life cycle of windows, doors and skylights.