Unverified85% confidenceFactTime unknown
遮光率是分等级的:一级遮光(≥99%全遮光)、二级(85-99%)、三级(60-85%半遮光),商家标'全遮光'需确认是否为黑丝或涂层结构,普通厚布无论多厚都难达99%
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85%
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Long-term
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Unverified真正全遮光需遮光率≥99.9%,选购时优先看是否标注'A级/全遮光'认证;浅色系(米白/浅灰)即使加涂层遮光率通常也只能到85-95%,深色(黑/藏蓝/深咖)才易达99%以上91% similarUnverified遮光布分级常以'一级遮光'指遮光率85-90%、'全遮光'指99%以上,商家标注混乱,选购应看具体遮光率数值而非等级名称89% similarUnverified遮光布常见分级:I级遮光99%以上(涂层或三层织造)、II级85-99%、III级60-85%;商家标注的"遮光"若未说明百分比通常只有II-III级,购买前需明确询问遮光率数值88% similarUnverified标称'五级遮光'为国标最高等级对应遮光率≥99.99%,'三级遮光'约80%-99%,购买时应认准具体百分比或遮光等级检测数值,而非仅凭'全遮光''加厚'等宣传词87% similarUnverified遮光率标称与实测差异大,行业无强制统一测试标准,商家标注的‘全遮光’可能只是85-90%;认准GB/T标准或要求提供第三方遮光率检测报告更可靠79% similar
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