Therearefewthermoplasticsthathavetheoutstandingengineeringpropertiesofpolycarbonate.Inrecentyearsithastakenitsplaceamongthemostvaluableresinsoftheindustry.Polycarbonateisamemberofthepolyesterfamilyinthatitcontainscarbonandoxygenatomsasthebackboneofthemole (共 6280 字) [阅读本文] >>