Polystyrene is a synthetic polymer made from styrene monomer, which is a liquid petrochemical. It is a thermoplastic polymer which softens when heated and can be converted via semi-finished products, such as films and sheets, into a wide range of final articles.

Polystyrene is used in a wide range of applications, including:

• Packaging
• Household appliances
• Consumer electronics products
• Building and constructions, for example insulation foam, panels, bath and shower units, lighting and plumbing fixtures
• Medical items such as tissue culture trays, test tubes, petri dishes, diagnostic components, and housing for test kits