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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.Open codeblock:There is another point, Because the drag armour-piercing cocktails were almost useless before, After so many supplies, we have accumulated a lot of ammunition, and the quantity is almost equal to that of ordinary bullets, so we can play with "strength" and don't have to worry about not enough ammunition. This is much better than "74 sprays" which have to be used crepily. If there is enough ammunition, we can output high firepower, which is as simple as that. "Zhang Xiaobo said.为了保住饭碗，一名职场女强人必须前往克拉科夫。不料，怕狗的她却在此遇到一位迷人的鳏夫、他的儿子以及两人的狗狗密友本剧改编自直木赏获奖作家井上荒野在岛清恋爱文学赏的获奖作品，描述了充满着神秘气息的身无居所的无业主人公润一和从16岁至62岁的拥有各种背景的女性们之间的瞬息之爱。他也不必失望，严嵩如果考虑大计的话，他就不是严嵩了。