... material; 3. Strength adhesive. PET tape use for film switch Specification MaterialPET film, acrylic, silicon release paper. ExplainTransparent PET ... water, smoke, ultraviolet radiation and aging resistance performance.Three series of adhesive: 5#, 6#, 9#, different adhesive has ... and foil, nice air-proof. PurposeSuitable for the film switch, isolating and adhibit of upper and lower circuitry. ...