Features and uses: Polyester film polyester fiber composite material is a composite material made of polyester film coated with F grade adhesive on both sides and polyester fiber non-woven fabric on both sides. The heat resistance grade is F grade, the dielectric performance is good, and the mechanical strength is high. It is suitable for Y series and J02 series motors and electrical appliances as slot and turn insulation. color: White. Executive standard: GB/T5591.3-2008