Offenbach - New methods for the production of products were presented at the annual reception of the Chamber of Industry and Commerce (IHK) Offenbach. By Marc Kuhn. "It is not about efficiency, but about efficiency," said Professor Michael Braungart, owner of the Cradle-to-Cradle Chair - from the cradle to the cradle - for innovation and quality at the Rotterdam School of Management, in his keynote address.