得力A4研发文件夹双夹强力夹

评测依据

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• intros：{"brand_intro":"得力集团始创于1988年，是中国最大的办公与学习用品综合供应商之一，拥有覆盖全球的研发、生产和销售网络。品牌以\"务实、创新、高效\"为核心理念，产品线涵盖文件管理、书写工具、桌面办公等数十个品类，连续多年蝉联国内文具行业销量冠军，深受企业采购与个人用户信赖。","product_intro":"得力5302ES研发文件夹采用加厚PP材质，双夹设计可牢固夹持A4纸张，适合存放研发项目文档、技术图纸及实验记录。背脊宽18mm，可容纳约200页资料，配备透明插袋便于标签分类。金属夹具经防锈处理，开合顺畅不易变形，板面平整抗压，适合频繁翻阅与归档。","key_specs":["规格：A4/双夹","材质：聚丙烯（PP）","背脊宽度：18mm","容纸量：约200页","颜色：蓝/灰/红可选","尺寸：320×240×18mm"]}
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