https://www.schaeffler.com/sustainability/memberships https://www.schaeffler.com/remotemedien/media/_shared_media_rwd/http://www.schaeffler-sustainability-report.com/2018/strategy-and-sustainability-management/materiality-and-stakeholder-management.html Schaeffler Group | Sustainability Report 2018 27Schaeffler Group | Sustainability Report 2018 STRATEGY AND SUSTAINABILITY MANAGEMENT 1.4 Controlling sustainability with regard to key topics.