Unverified86% confidenceCautionTime unknown
老旧薄壁铸铁管或已锈蚀的下水管不要用强酸疏通剂,酸会加速金属腐蚀导致穿孔漏水,应选生物酶或物理疏通(弹簧/高压水枪)
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86%
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Long-term
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