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The development process of polystyrene
发布日期：2019-6-13 阅读数：1095
In 1839, the Germans first extracted polystyrene from natural resins.
In 1930, BASF began commercial production of polystyrene in germany.
In 1934, Dow began producing polystyrene in the United states.
In 1954, Dow began producing styrofoam.
