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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.District 1 Qingxin Fuquan Association可事实上的处境却比周天子不知差了多少，本来带着物卓民丰，兴旺繁华的彭城，即便是做个有名无实的义帝，安乐享受一生倒也不错。221. X.X.28The overall feeling is that the hotel has a good cost performance, a good environment, clear parent-child characteristics and good service, that is, the room facilities need to be upgraded! ""On Improving Squat Speed in Snatch"DragonSlayingStrategy; ProjectileStrategy Shooting Strategy; Melee's fighting strategy; SpellStrategy spell strategy.