Products Reprocessed Granules Polystrene About Polystrene : Polystyrene (PS) is a durable thermoplastic is a composed of styrene monomer units is. PS is available in different forms like general- purpose PS, high-impact PS, PS foam, and expanded PS foam with a wide density range of 0.95 – 1.05 g/cm³. Suitable Applications: Packaging materials (Foam sheets, containers etc.), Injection Molding, Extrusion, Blow molding etc. Polystrene PS – Natural (PCR – Clean) PS – Natural (PCR – Clean)