North Korea, Japan, and the U.S. all have sizable

來源: autumnjune 於 2018-04-22 09:02:03 [] [博客] [舊帖] [給我悄悄話] 閱讀數 : (123 bytes)

rare earth deposit. However, mining of rare earth is environmentally costly, this is why China led the industry.

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• 所以啊，逼急了哪管環保 -cutedolphin- ♂ 給 cutedolphin 發送悄悄話 (0 bytes) () 04/22/2018 postreply 11:04:44

請您先登陸，再發跟帖！