[KongchangAI]
Unverified85% confidenceDecision RuleTime unknown

带活性炭层的滤网主要作用是除甲醛/异味而非除颗粒物,活性炭吸附饱和后(约3-6个月)会失效甚至可能二次释放,除PM2.5需认准HEPA或高静电棉层,两者常复合使用

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