Unverified85% confidenceCautionTime unknown
老旧镀锌铁管或有金属接头的管道慎用强酸型，强酸会腐蚀金属造成锈蚀渗漏；这类管道优先用碱性或物理疏通
1
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85%
Confidence
Long-term
Relevance
-
First Seen
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