看這個。因為國外進口的鐵礦砂可以有比國內任何來源都高的含量。

來源: borisg 於 2024-08-18 11:53:46 [博客] [舊帖] [給我悄悄話] 本文已被閱讀：次

WENXUECITY.COM does not represent or guarantee the truthfulness, accuracy, or reliability of any of communications posted by other users.