Jiangsu Dean New Materials Corporation

E. P. S.   (Expandable Poly Styrene) is a lightweight, rigid, plastic foam insulation

material produced from solid particles of polystyrene. Expansion is achieved by virtue of

small amounts of pentane gas dissolved into the polystyrene base material during

production. The gas expands under the action of heat, applied as steam, to form perfectly

closed cells of EPS. These cells occupy approximately 40 times the volume of the original

polystyrene bead. The EPS beads are then molded into appropriate forms suited to their

application. Products made from foamed polystyrene are nearly ubiquitous.