The material topics of our strategic sustainability process are generated from our daily and long-term actions and activities. We consider it important to include representatives of all stakeholders in the evaluation of these topics. We therefore compiled an extensive list of individual topics covering the categories of environment/climate protection, economy/business, values, products/services/markets, safety, information/data protection, customers, employees, society and suppliers. To achieve a differentiated prioritisation of our internal stakeholder groups, such as owners, management and employees, around ten per cent (approx. 500 employees) voluntarily completed an anonymous online survey where they rated the topics on a scale of one to ten, with one being important and ten extremely important. We also evaluated 17,000 customer opinions from the latest customer survey and used the information in our analysis. The anonymous online survey was also completed by selected journalists.