Polystyrene

[Monty]

A polymer of styrene that is a rigid, transparent thermoplastic with good physical and electrical insulating properties, used in molded products, foams, and sheet materials.

[Ernesto]

A synthetic resin which is a polymer of styrene, used chiefly as lightweight rigid foams and films.

[Michiko]

polystyrene also known as ps is a hard [rigid] thermoplastic used to make housings for electronics electrical products refrigerator liners [cd cases] [foam] products and other consumer products