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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.这个故事，是在人类与嗜血种共存为日常生活的舞台上进行的。三堂主上官一剑把大堂主赵翎的首级献给徐门，以示投降。赵翎之子赵轩潜入徐家堡，为父报仇，欲杀上官一剑之际，捏碎了「琥珀青龙」，内藏其父之遗书，始知其父原是甘愿献出头颅让上官一剑伪降徐家堡，藉以进行反间计。真相大白，赵轩遵父命，与上官化解仇恨，誓要合力消灭徐家堡。The process of solving crimes:34集电视剧《风云世家》由著名作家郑万隆策划，以案件+遗产+讲情的戏剧结构形式，讲述一个跨越海峡两岸的中国大家庭三代人的恩怨和纠葛，从骨肉分离彼此隔膜，到合家团圆、美满和睦的曲折故事。律师金笛（张瑜饰）在美国打赢一系列跨国官司，在全法律界名声大振。而后，金笛在追查一起化工厂污染地下水的案子中，无意中把自己素未谋面的“表妹”——金氏集团代理董事方麒安（吴家丽饰）告上了法庭。引出了一个难解的家庭谜团。原来，金笛的母亲金惜枝是台湾声名显赫的企业家金百川的女儿，当年因种种恩怨而断绝了父女关系。晚年的金百川暗地请律师到上海寻访到了金惜枝母女。金百川在遗嘱上声明长女金惜枝母女、次女金爱叶母女都是遗产继承人，并留下四个锦囊，四人必须在半年内完成锦囊中的任务后才能获得遗产。这份奇特的遗嘱让每个人目瞪口呆，于是金氏家庭四十年里令人震惊、匪夷所思的诸多往事一一被揭出，发生了一系列曲折跌宕的财产争夺战。四个锦囊里到底藏着怎样的玄机，金笛是否能揭开其中秘密，金笛能否获得真正的感情归宿，所有的疑问，都在这场波澜起本应平凡的校园，却传出了骇人听闻的事件！最亲近的同学，一个个化为嗜血的僵尸…我们，该何去何从？(Update 11.29)