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购买燃气管之前准备事项，各类燃气管的优缺点及安装过程。
视频中讲述了燃气管购买之前做哪几点准备；燃气管分类及优缺点；燃气管的连接安装过程。希望更多的朋友看到并有所收获！
燃气灶故障判断及维修教程35/67
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