I ordered some items December 11, 2016 from China and still no sign of them. It says " posted" back on December 15 but I am unable to track it from there. I believe it is in the US at post office 510321 but I don't know where that is. I put in the tracking number and it says unable to track. The number is LT591939598CN. Please let me know where it is and when I hope to get them. Way too late for Christmas now but still want them.

-Why is do they keep returning it, even though it was handed to the airline, and no it's going back and fourth from Beijing exchange to Intern Post, Help please!!!
Package rejected,unable to ship by air

2019-11-04 10:34:55

Package rejected,unable to ship by air

2019-11-02 21:51:08

Package rejected,unable to ship by air

2019-10-31 04:38:18

Package rejected,unable to ship by air

2019-10-30 21:48:26

Hand over to airline

2019-10-21 08:02:16 [GMT+8]

Post office collection.

2019-10-13 13:44:01 [GMT+8]

Received by line-haul

2019-10-12 18:08:03 [GMT+8]

Outbound in sorting center

2019-10-11 15:25:30 [GMT+8]

Inbound in sorting center

2019-10-01 00:02:25 [GMT+8]

Accepted by carrier

2019-09-30 23:32:25 [GMT+8]

tracking- 20 June 14.47 Unable to import-return to sender
Tracking number LB015300426CN
Why was it unable to import and who was it sent back to?