Sandwich Plate System (SPS) is the name of a patented structural composite material comprising two metal plates bonded with an elastomer core. SPS was created in partnership with chemical manufacturer BASF incorporating Elastocore ® as the core material. The SPS material is a direct replacement for stiffened steel and reinforced concrete in heavy engineering projects. SPS is an unlicensed technology used globally in various engineered structures including maritime ships, offshore assets, buildings, stadiums and arenas, bridges and other special applications.