谁能帮我查一下USPS的单号

Label/Receipt Number: LJ31 4751 396U S
Class: First-Class Mail International
Service(s): International Letter
Status: Electronic Shipping Info Received

The U.S. Postal Service was electronically notified by the shipper on November 5, 2009 to expect your package for mailing. This does not indicate receipt by the USPS or the actual mailing date. Delivery status information will be provided if / when available. Information, if available, is updated periodically throughout the day. Please check again later.

不知道你单号对不对。。。
登陆www.usps.com，USPS的官网，在主页右手边“Track&Comfirm”输入邮包号

查询即可，但此只能查到从美国运出至入国内关前这段时间的状态，进入国内后

还需转由EMS递送，登陆www.ems.com.cn EMS官网再输入同样的邮包号查询即

可，以上即整套流程。