thyssenkrupp AG is a diversified industrial group with steel operations and capital goods and services businesses. Its segment includes Materials Services, Decarbon Technologies, Automative Technology, Steel Europe, Marine System. Automotive Technology is one of the German supplier and engineering partners to the international automotive industry. Decarbon Technologies covers the businesses of Rothe Erde, Uhde, Polysius and the majority investment thyssenkrupp nucera. Material Services includes distribution of mill-independent materials distributors and service. Steel Europe concentrates on the market for high-quality flat carbon steel. Marine Systems is a supplier for submarine and surface vessel construction. Revenue from Materials Services.