1.expanded polystyrene 2.best quality 3.quick delivery 4.good service 5.free sample Eps raw material for polystyrene 1.What is EPS?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 ...