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thegirlbefore
(Jane)
没类似的工程经验,单是bonding这一个contractor报价14万,太讹人了。metal cladding 在施工中就是接到steel column和屋顶的梁上的,这些本来就在原建筑上接到grounding system上的呀。
(#12432812@0)
Last Updated: 2019-11-6
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