The document summarizes the president of UFEMAT's welcome address to the 57th UFEMAT Congress in Dubrovnik, Croatia. It outlines four challenges for UFEMAT: 1) sharing best practices between members, 2) defining their identity as "Professional Merchants of Building Materials", 3) adapting to the digital world and how it will impact their market, and 4) being a reference and leader for the EU's horizon 2020 building sector project. The president thanked the attendees at the end.