可能是人工和天然都有，所以才有質量等級認定，不然對天然奶就不公平了。

來源: 胡憶於 2018-06-18 19:17:10 [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.