There’s a state-of-the-art company behind world’s most famous landmarks. The secret behind all these iconic buildings is Permasteelisa the premium brand in the façade construction market. Permasteelisa was first established in 1973, originally with the name of I.S.A. "Infissi Serramenti Alluminio" and started its activity in Italy as a small window manufacturer and grew to become a premium brand in the façade construction market. By virtue of its international expansion and growth, Permasteelisa set the basis for the Permasteelisa Group’s foundation. Today more than 2,100 employees work in the main office in Italy and in the other offices around the world.