Based in Salsomaggiore Terme, near Parma, and in Anderson, Indiana, in the USA, SER (Società Europea di Rigenerazione) became part of the Sirmax Group in January 2019. The company specializes in the treatment and recycling of post-consumer plastic materials, from which polypropylene , high- and low-density polyethylene, and polystyrene are processed. In 2020 the Group finalized a significant investment plan for this site, doubling its production capacity and building new offices and a new R&D department, which includes improved lab equipment and pilot lines.