6-20 个字符(仅限字母加数字)
密码不一致
Polylactic acid (PLA), an environmental protection substance, has undergone numerous transformations and applications in the non-woven fabric sector. It is extremely biodegradable. The microorganisms in the soil totally decompose it when it is thrown away, producing carbon dioxide and water. It actually "comes from nature and belongs to nature" and does not contaminate the environment.