
 Therearefewthermoplasticsthathavetheoutstandingengineeringpropertiesofpolycarbonate.Inrecentyearsithastakenitsplaceamongthemostvaluableresinsoftheindustry.Polycarbonateisamemberofthepolyesterfamilyinthatitcontainscarbonandoxygenatomsasthebackboneofthemole (共 6280 字) [閱讀本文] >>