Can you check my tracking number RB596474145CN?

It is no information about my order since September 18, 2013. The package was sent to airport, but it is no information that it was delivered to USA.( see info below).

Tracking No. Status Location Destination Date
RB596474145CN Collection Wuhan US Sat, 14 Sep 2013 09:24:00 GMT
RB596474145CN Opening Wuhan US Sat, 14 Sep 2013 10:45:00 GMT
RB596474145CN Dispatching Wuhan US Sat, 14 Sep 2013 10:53:00 GMT
RB596474145CN Departure from outward office of exchange Beijing US Tue, 17 Sep 2013 08:23:00 GMT
RB596474145CN Delivery to airport Beijing US Wed, 18 Sep 2013 04:48:00 GMT

Here is information from USPS:

Tracking Number: RB596474145CN - NOT FOUND