Unverified90% confidenceFactTime unknown
PP聚丙烯材质具备基本防水防潮能力，适合家庭存放证件复印件、保单等纸质文件长期归档
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90%
Confidence
Long-term
Relevance
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UnverifiedPP材质具备基本防水防潮能力，适合存放需要防水保护的纸质文件，但不耐长期重压易变形91% similarUnverifiedPP塑料材质手风琴包本身防水防潮但不透气，纸质票据长期封存易返潮发黄；重要文件长期存档应选牛皮纸/无酸纸内衬或定期开合通风85% similarUnverifiedPP材质内页和封面具备基本防潮防水能力，适合长期存放病历、检验单等纸质文件，优于普通纸板文件夹84% similarUnverifiedPP聚丙烯材质耐水耐污、不易变形，但内页为硬质半透明塑料，对纸质票据无防酸或缓冲保护，长期存放薄纸可能产生静电吸附83% similarUnverifiedPP聚丙烯材质分类夹韧性好、抗撕裂、可反复弯折不发白，适合频繁携带；纸质（牛皮纸/卡纸）挂裱夹便宜但受潮易变形，只适合固定抽屉内长期存档83% similar
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