Give two uses of polystyrene.
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Polystyrene (PS) is used for producing disposable plastic cutlery and dinnerware, CD "jewel" cases, smoke detector housings, license plate frames, plastic model assembly kits, and many other objects where a rigid, economical plastic is desired.
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polystyrene is used for packing fragile objects like television and computers,making thermol and insulating hollow walls of refrigerator and air conditioner
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