The service life of the plastic film can be designed according to the climate of the film used, the soil environment and the crop insulation and the preservation period, such as 15 days, 30 days, 60 days, 90 days, 120 days. After the design life is over, the plastic film begins to degrade rapidly; The multi-water environment will not destroy the physical and chemical properties of the product. During the degradation process, the mulch film that is split into pieces can be attached to the surface with water, and in the dry environment is not blown away by the wind;
There was no physical or chemical contamination of the mulch during the degradation process and after the degradation was completed. The content of heavy metals such as cadmium, lead, chromium, and mercury is less than 1ppm.