Arcelor Building and Construction Support, a support unit for the development of steel construction units, has organised the Arcelor convention for the first time in Italy. It was dedicated to construction and took place at the new Rho/Pero exhibition centre, which will be open to the public on 25 April 2005, with more than 200 participants. 130,000 tons of steel, carbon and stainless steel are being used in the metallic construction of the building. Once completed, the structure will cover 530,000 square metres of surface space. Of particular effect is the reflecting façade, made from stainless steel panels, which cover the pavilions that face the central axis.