F-grade epoxy resin prepreg imapangidwa ndi polyester film polyester fiber non-woven soft composite material ndipo imalowetsedwa ndi epoxy resin yosamva kutentha.Iwo m'malo kunja kutentha zosagwira epoxy sanali nsalu nsalu pre-impregnated utomoni sanali nsalu nsalu (HTEPP), ali kwambiri katundu magetsi, kukana kutentha, retardancy lawi, nthawi yosungirako yaitali kutentha firiji, angagwiritsidwe ntchito ngati youma-mtundu thiransifoma otsika -voltage coil interlayer insulation ndi F-class Motor slot insulation and phase insulation.
