Compostable packing bags manufacturers tell you that biodegradable materials include biodegradable natural polymer materials such as cellulose, starch, paper, etc.as well as biodegradable plastics obtained by biosynthesis or chemical synthesis.

The manufacturer of Compostable packing bags tells you that biodegradable plastic means that in nature, such as soil, under certain conditions, or composting conditions, or in an aqueous culture solution, it is degraded by the action of natural microorganisms, and finally completely degraded into Carbon dioxide (CO2) or/and methane (CH4), water (H2O) and mineralized inorganic salts of the elements contained therein, and new harmless biomass (such as microbial dead bodies, etc.).
In other words, biodegradable materials must meet three conditions:
First, it must be completely degraded, and the products are carbon dioxide, water and new harmless substances;
Second, the manufacturer of Compostable packing bags tells you that under industrial composting conditions, it must be completely degraded within 180-360 days;
Third, the manufacturer of Compostable packing bags tells you that after degradation, it will not cause any harm and will not have any impact on the environment.
Only when the above three conditions are met can it be regarded as a fully biodegradable material.
The manufacturer of Compostable packing bags tells you that the degradation of biodegradable materials requires certain environmental conditions. If the degradation conditions are not available, especially the living conditions of microorganisms, such as suitable temperature and humidity, the degradation will be very slow. It is not under any environmental conditions. Both can be quickly degraded. Therefore, during the specified period of use, under normal storage, the use effect will not be affected.
The manufacturer of Compostable packing bags tells you that to determine biodegradable materials, you should first start from its environmental conditions and analyze the structure of the material itself to determine whether it is a biodegradable material.