ZETTL GmbH is a medium-sized company and has been focused on mechanical and apparatus engineering for over sixty years and stands for the planning and construction of machines and systems in mechanical and thermal process engineering. The traditional business areas of drying and vacuum technology include the core products of paddle dryers, roller dryers, filter dryers, mixers and granulators. In addition, the recently adopted technologies of rotary kilns and rotary kiln, coolers and distillation apparatus such as BPD (Batch Process Distiller) and MFD (Mercury Fine Distiller) are part of the product range. ZETTL's portfolio also includes technologies for the treatment and stabilization of NORM residues.