Unverified50% confidenceDecision RuleTime unknown
认准标签标注UPF≥40且UVA透过率<5%才可称为防紫外线产品（国标GB/T 18830要求），UPF50+意味着仅2%以下紫外线穿透，市售低于UPF40的宣传款不算合格防晒衣
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