We set ourselves globally consistent standards. We use various systems to monitor whether and how our sites adhere to these standards for environment, safety and product stewardship. Furthermore, we check to make sure they fulfill commitments to labor and social standards as well as compliance. We conduct internal audits on process safety, occupational health and safety, and environmental protection. We review labor and social standards based on a three-part monitoring system. This includes an external compliance hotline, a survey in our Group companies and dialog with employee representatives and global organizations. In addition to economic criteria, our suppliers are selected on the basis of environmental protection, labor and social standards.