難度非常大, 現在美加都征收反傾銷稅, 石油管道從中國進口基本不可能有利潤, 而且油價下跌, 市場價格低迷.

來源: D&D 於 2013-02-12 22:21:17 [舊帖] [給我悄悄話] 本文已被閱讀：次

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