Unverified95% confidenceDecision RuleTime unknown
婴儿贴身穿着的袜子必须符合GB 18401 A类（婴幼儿纺织品）标准，其甲醛含量要求≤20mg/kg，pH值需控制在4.0-7.5之间，比B类（≤75mg/kg）严格得多，购买时应查看吊牌明确标注'A类'或'婴幼儿用品'字样
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