Polystyrene ( Polystyrene )And symbolized by this symbol and Acronym : PS And is a danger to health, harmful and unsafe, we use it almost daily, it is cork, cups of coffee and tea of cork, and cans sandwiches and the their burger and fast food and even dishes cork where the butcher meat put on sale, and some a types of yogurt cans , cans and CDs and DVDs , reacts quickly with heat, chlorinated solvents and even aromatic solvents ( such as gasoline ) , it is advised to avoid it as much as possible , fast and easy manufacturing of the e product and is available in abundance .