Hans-Dieter Riede looks back on more than 25 years of professional experience in chemical and process industry. After his graduation as Chemical Engineer at the University of Karlsruhe he began his professional career at a large chemical group in Germany. With continuously increasing responsibility first as project manager for new chemical and environmental protection plants, later in production and as technical director of a large chemical site and at last as Managing director of a Technical Service company he gained broad experience in chemical industry and industrial park management. 2007 Mr. Riede joined a global operating engineering company for design and construction of polysilicon- and ingot&wafer plants. There he had the overall responsibility for research and development, marketing & sales and the international projects with project volumes of several hundred million Euros. Since 2014 Mr. Riede is co-owner and managing director of the newly formed ENIGA GmbH which offers consultancy, technology and engineering for polysilicon, environmental protection and industrial park development.