Home Display Materials Polyimide (PI) material Pyromellitic Dianhydride (PMDA) Pyromellitic Dianhydride (PMDA) CAS: 89-32-7 Category: Polyimide (PI) material Related products 3,3′,5,5′-Tetramethylbenzidine (TMB)CAS: 54827-17-7 Polyimide (PI) material 1,4-Bis(3,4-Dicarboxyphenoxy)benzene Dianhydride (HQDPA)CAS: 17828-53-4 Polyimide (PI) material 2,2-Bis[4-(4-aminophenoxy)phenyl]-hexafluoropropanane (HFBAPP)CAS: 69563-88-8 Polyimide (PI) material Nadic Anhydride (NA)CAS: 826-62-0 Polyimide (PI) material