[KongchangAI]
Unverified85% confidenceDecision RuleTime unknown

弹簧疏通器长度需匹配管道深度:洗手盆/地漏选3-5米即可,主排污管或跨楼层堵塞需10米以上,长度不足会无法触及堵塞点

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Long-term
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