The description of the item 3920621908 of Italy HScode: "Plates, sheets, film, foil and strip, of non-cellular poly""ethylene terephthalate"", not reinforced, laminated, supported or similarly combined with other materials, without support, unworked or not further worked than surface-worked or merely cut into squares or rectangles, of a thickness of <= 0,35 mm (excl. such self-adhesive products, floor, wall and ceiling coverings of heading 3918, poly""ethylene terephthalate"" film of a thickness of >= 100 but <= 150 micrometres for the manufacture of photopolymer printing plates and poly""ethylene terephthalate"" film of a thickness of >= 72 but <= 79 micrometres for the manufacture of flexible magnetic disks) : Poly(ethylene terephthalate) film, not coated with an adhesive, of a thickness of not more than 25|µm, either: -|only dyed in the mass, or -|dyed in the mass and metallised on one side"