Unverified90% confidenceDecision RuleTime unknown

真正卧室全黑遮光需遮光率≥99%（5级），普通银涂层/三层编织可达85-95%（适合客厅），需完全遮光选背面涂银或黑丝加密织物

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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89% 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

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