pof single wound heat shrink film,plastics packaging material,polyolefin shrinkable wrap,shrink foil pof single wound heat shrink film,plastics packaging material,polyolefin shrinkable wrap,shrink foilThe character of POF heat shrinkage films ... .Good flexility,welding performance,adjust to the cryogenic temperature.4.High tension,can be suitable for manual,semi-automatic,automatic packing ...