http://track-chinapost.com/startairmail.php shows Hangzhou Transit Station import customs scan. This is a bad news for you. Your parcel was returned to China from Oversea(possibly your country).

Normally I will suggest buyer to open dispute for non-arrival parcel and claim refund.

Quote from Joks on November 29, 2016, 16:42
Thank you,I contacted the seller and he send it again in new parcel. But I have problem with another order,number is RK560009748CN . Can you tell me where is it?

1. Last tracking of your parcel is this:
2016-11-21 09:26:44.0 Suzhou Transit Station export customs scan (domestic transit )

2. Either the parcel is transiting inside China to a new destination or it has difficulty passing the Export Customs Check. Look at this:

China Post Forbidden Item List

What is the status of “Export Customs Scan” ? How long it will take?

3. You should contact seller so he can call China Post to find out about your parcel.

Hope this help.

Quote from Joks on January 15, 2017, 17:18
Hi,can you tell me what is going on with this shipment,it was send 16.12.and from that date no updates.This is tracking number RF469391179CN ? And I have more orders for november that are no trackable and still didn't received it?

1. Parcel to Serbia in normal condition should take maximum 3 weeks. Because of the holiday Seasons it might have been delayed. Just give your parcel one more week.

2. You could in the meantime contact your seller and tell him you have not receive your parcel. He might be able to call China Post to find out more information about your parcel.

Thanks.