发布时间:2025-01-23 07:22:17
要看什么故障,是否跟电力局上次的维修有关。不合理的情况找厂家申诉。不过说数月后又坏的,应该可以保修。
工程报验单中有材料构配件工程机械几个分类那阀门法兰属于哪一类
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