美国人口稀少的地方多。
这一点,美国占便宜,中国不适宜
回答: unless the electricity is really cheap or from high efficient so
由 WXC1204
于 2018-07-03 19:52:19
所有跟帖:
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I was working in such chemical factory in 1980s. The work site,
-WXC1204-
♂
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07/03/2018 postreply
20:24:37