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Polystyrene Case Essay Preview: Polystyrene Case Report this essay Polystyrene is defined as a strong plastic created from Petroleum Ether(Benzine) and ererythylene. It was discovered by Eduard Simon in 1839. Polystyrene can be injected, blow moulded or extruded, thus making it a versatile and useful manufacturing component. Polystyrene products are recyclable in nature. Polystyrene is.