You over concerned - 回复：对不起，我可能没有说明白，是这个意思，

来源: 于 2008-02-11 16:56:26 [博客] [旧帖] [给我悄悄话] 本文已被阅读：次

If you will stay abroad over 6 mos, better to apply a RP before leaving.

A RP is good for 2 year, with no limitation of usage, and you don't have to wait its approval while being inside.