How to distinguish the quality of POF shrink film is good or bad?

How to distinguish the quality of shrink film is good or bad? The quality of the shrink film is mainly reflected in its toughness. It is generally invisible to the eyes. It looks the same, or the color is different. How to distinguish: After the shrink film is packaged, use your finger to poke one Hole, if the place you poke is only a finger-sized hole, then the shrink film is of good quality and good toughness. The poor ones will burst into a long strip if you poke them up. The toughness is poor and it will not provide protection. [Strength manufacturer] POF/PE heat shrinkable film, imported stretch film leading brand Shenzhen Co., Ltd., leading equipment and technical strength, strong production of POF shrink film, PE heat shrinkable film, PVC shrink film, imported stretch film, environmental protection shrink film, An integrated manufacturer of packaging materials such as PET shrink film and packaging bags. Therefore, the prices on the market will vary, which is the reason. Warm reminder: Do not only look at the price but also the quality of the packaging materials. Lost!