From the perspective of common sense, the selection of specifications for hand wrapping film needs to be based on the weight and shape of the goods. Light and small goods can choose products with a thickness between 0.017 millimeters and 0.020 millimeters, while heavier or angular goods require thicker or tougher models. When stretching and winding, the operator should try to keep the film flat as much as possible, avoid excessive stretching that may cause breakage, and ensure sufficient coverage layers. It is generally recommended to cross wrap two or more layers. In addition, the storage environment also has an impact on the performance of the film, and direct sunlight and high temperatures should be avoided, otherwise it will accelerate aging and reduce viscosity.

The quality control level of hand wrapped film manufacturers can be observed from several aspects. The first issue is whether the source of raw materials is stable, as a high proportion of recycled materials can lead to increased film brittleness and decreased transparency. Secondly, the cleanliness of the production workshop and the maintenance status of the equipment affect whether crystal dots or impurities appear on the surface of the film. **It is a testing item before leaving the factory, including thickness deviation, tensile strength, right angle tear strength, and viscosity testing.