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Polylactic acid (PLA) is a new bio-based and renewable biodegradable material, which is made of starch raw materials proposed by renewable plant resources (such as corn). Starch raw materials are saccharified to obtain glucose, then glucose and certain strains are fermented to produce high purity lactic acid, and polylactic acid with certain molecular weight is synthesized by chemical synthesis method. It has good biodegradability, can be completely degraded by microorganisms in nature under specific conditions after use, and finally generates carbon dioxide and water without polluting the environment, which is very beneficial to environmental protection and is recognized as an environment-friendly material. This thing is actually a long piece, and then "curled up" in it and wrapped in a cylinder shape. What's the use? You will see it in a short time.停了一会又道：县尊依旧是吕方。For example, many information platforms began to make short videos, jokes, constellations and novels. Because the traditional portal mode is very heavy, how much manpower can produce how much content is limited, and it cannot cover many subdivided points of interest, nor can it cover the needs of users.《师父》改编自徐皓峰的同名短篇小说，讲述了民国年间发生在天津武术界的一段恩怨情仇。男主人公南派武人陈识为在天津武术界开馆立足，收当地青年耿良辰为徒代其踢馆。却未料一场席卷天津武术界的剧变，正向师徒二人袭来。Play results directly:Additional Notes: