Polyester film tape made from high-quality BOPET (Biaxially Oriented Polyethylene Terephthalate) film, known for high electrical resistivity, glossy finish, and durability, used extensively in electrical insulation (cable wraps, transformer winding), supplied in various thicknesses and forms.

Key types include clear (ER/ERE) and milky white (EM6) films, offering superior thermal stability and mechanical strength for demanding industrial applications.