From April 4 to 8, the city of Hannover is once again the center of global industry. HANNOVER MESSE 2011 features more than 6,500 exhibitors from 65 countries. These companies are showcasing more than 5,000 high-tech products. For example: The latest robots, incredibly lightweight materials for auto manufacturing or Virtual assembly sites in 3D. Plus, France is making a special appearance as Partner Country. The following segment reveals the special guests of the official opening on Sunday along with some of the highlights at HANNOVER MESSE 2011.