Polyester film is biaxially oriented polyethylene terephthalate (PET) film. Characteristics for Polyester film are flat, low shrinkage with excellent insulation properties, UL approved. Polyester films are widly used in Electronic and electrical insulation, such as slot insulation, interturn insulation and liner insulation in electric motors, wrapping insulation for coils and cables, as well as producing insulating flexible composite materials. this product is easy to cut and form.