EPP (Expanded polypropylene) is an engineered plastic foam material. By combining polypropylene resin with magic dust, and applying heat, pressure and CO2 in an autoclave, the material is formed into small plastic beads. These small, closed-cell foam beads are injected into a steam chest to create parts custom moulded into complex shapes using steam heat & pressure.EPP foam beads raw material is widely known as ARPRO® which is manufactured by JSP, the global leader in producing & supplying EPP beads material.