6520-Polyester Film /Fish Paper Flexible laminate 6521-Polyester Film /Insulating Paper Flexible laminate 6520 is a two-layer flexible laminate in which polyester film is bonded with fish paper.6521 Polyester film /insulating paper flexible composite material is made of polyester film with insulating paper. It is Class E insulating material.This product has excellent dielectric property and high mechanical property.It is suitable for slot insulation, interphase insulation and liner insulation in electric motor and electric apparatus.Nominal thicknessmm):0.15,0.17,0.20,0.22,0.25,0.27,0.30,0.35,0.45