When will we meet many POF plastic film after heat POF plastic film packaging machine, there will be more broken, or wrinkle, or a small hole, this is the embodiment of the seal; sealing of POF plastic film quality is very good, complete thermal contraction process, very beautiful, really achieve contraction the effect we want; systolic memory function, retraction tightness is good, this is reflected in the whole product packaging and components, the product protection, will not cause the disorder, or the packaging is not completed, this with second points to be similar. Anti piercing strength, that is to say, during the transportation process, the POF thermal plastic film plays the protective role we want. The high quality POF plastic film has high anti piercing strength and will not be punctured easily.