SNIA S.p.A. was an Italian firm located in Milan that manufactured defence products, textiles, chemicals, perfumes, and corrugated paper among other products. In the early 1920s SNIA began to manufacture artificial textile fibers. Artificial cellulose fibers had been produced before the war, but SNIA was the first to mass-produce rayon. The company was given the new name of SNIA Viscosa (Società nazionale industria e applicazioni viscosa, National Rayon Manufacturing and Application Company). – Wikipedia