Unverified85% confidenceDecision RuleTime unknown
针对陈年黄渍和油污的美缝清洁，应选择含次氯酸钠（NaClO）浓度5%以上的强氧化型清洁剂，其漂白去黄效果远强于普通表面活性剂型；但仅适用于白色或浅色美缝剂
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