Within many of the application-oriented research projects carried out by young and motivated scientists in the WZL, there are approaches and concepts that offer the potential to pursue the ideas even after the end of the project and to put them into practice. The idea of founding a company as a spin-off has a long tradition in the WZL and therefore there are many companies in the environment of the institute which have their origin in the RWTH Aachen. The portfolio of these companies ranges from various services to the manufacture of complex products and advice on a multitude of issues within production technology.