SMS group has developed a new primary smelter named CONPRO, responding to the challenges of rising CO2 emission costs and fluctuating prices of charge materials for the BOF converter process. This innovative technology integrates both BOF converter and electric arc furnace (EAF) technologies, providing a highly efficient and flexible energy source combination. CONPRO can operate similarly to a BOF converter, enabling a significant reduction in the use of scrap or other coolants to approximately 15%. Additionally, it features a top lance and side wall lances for effective oxygen introduction. In cases where molten pig iron is unavailable, CONPRO can seamlessly switch to EAF mode within a single shift, with only minor procedural adjustments required.