I. Unitization: The unitization of wrapping film packaging is to use the strong wrapping force and retractability of the film to bundle the items into a unit compactly and fixedly, so that the scattered and small pieces become a whole, even in unfavorable environments. There is also no looseness and separation of the items.

II. Primary protection: The primary protection provides the surface protection of the item, forming a very light and protective appearance around the item, so as to achieve the purpose of dustproof, oil-proof, moisture-proof, waterproof and anti-theft.

III. Compression fixation: The articles are wrapped and packaged with the help of the retraction force after stretching of the wrapping film to form a compact unit that does not take up space as a whole, so that the pallets of the articles are tightly wrapped together, which can effectively prevent the transportation process. Mutual dislocation and movement of objects.

IV. Cost saving: The use of wrapping film for item packaging can effectively reduce the cost of use. The use of wrapping film is only about 15% of the original box packaging, about 35% of the heat shrinkable film, and about 50% of the carton packaging. At the same time, it can reduce the labor intensity of workers and improve the packaging efficiency.