The core activities of Duferco encompass four main areas: 1. **Energy**: Energy trading, origination and trading. 2. **Steel**: Steel production and distribution, particularly of long products, including commodities and specialties. 3. **Shipping**: Shipping and transportation of goods, particularly in connection with steel production and trade. 4. **Innovation**: Development and implementation of new technologies and initiatives to strengthen and expand the company's existing portfolio and strategy. These four areas form the core activities of Duferco.