[KongchangAI]
Unverified83% confidenceCautionTime unknown

不要购买需要破坏原燃气管道螺纹或焊接安装的切断阀,家用应选外接式(灶前阀后串联安装),可自行拆装且不影响燃气公司管道产权;嵌入式改造必须由燃气公司持证人员操作

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83%
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Long-term
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