Unverified90% confidenceDecision RuleTime unknown

追求全黑暗环境（如卧室、婴儿房、影音室）需选择涂层遮光率≥99%的三层复合涂银面料，且必须搭配侧边导轨或L型挡光条，否则卷帘两侧漏光会导致实际遮光效果打折30%以上

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Unverified追求真正卧室全黑效果需选择涂银/涂层遮光布（遮光率≥99%）+ 侧边导轨或L型挡光条，普通全遮光卷帘四周漏光缝隙可达2-3cm，白天仍有明显光晕90% similar Unverified遮光率≥90%（三级遮光）适合普通卧室；追求全黑（如夜班族/影音室）需选遮光率≥99%的银涂层或三层复合遮光布89% similar Unverified全遮光需求（如卧室、婴儿房）必须选『三层结构+加缝遮光里布』，单层高密度面料遮光率通常仅70-85%，边缘漏光明显；标注『涂银/涂层遮光布』遮光率可达99%但透气差易发霉，湿热地区慎用88% similar

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