Home Display Materials Polyimide (PI) material Pyromellitic Dianhydride (PMDA) Pyromellitic Dianhydride (PMDA) CAS: 89-32-7 Category: Polyimide (PI) material Related products 2,3,3′,4′-Tetracarboxydiphenyl oxide dianhydride (α-ODPA)CAS: 50662-95-8 Polyimide (PI) material 5-(3-phenylprop-2-ynoyl)-1,3-dihydro-2-benzofuran-1,3-dioneCAS: 1329658-14-1 Polyimide (PI) material Nadic Anhydride (NA)CAS: 826-62-0 Polyimide (PI) material 4,4′-Diaminodiphenylmethane (MDA)CAS: 101-77-9 Polyimide (PI) material