What does biodegradable membrane mean? Can Kaiyuan Creative Arts completely degenerate?

I've heard what you said about Kaiyuan Chuangyi, but biodegradable membranes are a bit complicated and different. From the development trend of biodegradation, the first generation biodegradable film is PE+ heavy metal, and the second generation biodegradable film is PE+ potato starch. The first two are called degradable, that is, incomplete degradation, and the third generation is the biodegradation of Kaiyuan Chuangyi, which is completely degraded by soil microorganisms.