Foamedplastics(alsocalledexpandedorcellularplastics)aremadebyaddingairorgastoaplasticresintoformasponge-likematerial.Moderndevelopmentsinplasticfoammoldinghaveplacedthisamongthemajorprocessingtechniquesoftheindustry.Resinscommonlyusedintheproductionofplas (共 8972 字) [閱讀本文] >>