知道黄金在地壳里的储量和开采成本吗?醒醒
所有跟帖:
• For most companies it is high -_学无止境- ♂ (420 bytes) () 05/07/2012 postreply 08:17:14
• Sorry, I meant not high enough. -_学无止境- ♂ (0 bytes) () 05/07/2012 postreply 10:30:56
• For most companies it is high -_学无止境- ♂ (420 bytes) () 05/07/2012 postreply 08:17:14
• Sorry, I meant not high enough. -_学无止境- ♂ (0 bytes) () 05/07/2012 postreply 10:30:56