I've done this recently, go to www.usps.com

Then click "calculate a price". Destination: China
After you enter all the information, you will see a list of options: express, priority, flat rate, or by weight. 
如果不太重但是需要容积大，按重量付费比较合适。
俺近两周寄了三个箱子了。从网上付款并print shipping label， 比去邮局当场付款便宜10%左右。俺用的priority, 两周就到。也用过一次express，一周到。
Good luck. 

所有跟帖： 

• 多谢 -悄悄蒙上你的眼- ♀ (0 bytes) () 06/08/2013 postreply 08:58:36