Hello, I've recently bought two parcel from aliexpress but I think that something is gone wrong, in fact it's been 35 days that there aren't any updates from the tracking numbers. Here I post every information:

RF348469048CN

* 16, 201610:41 am
Leaving parcel center【上海浦东】 Sent to airlineChina Post

* Sep 16, 201610:22 am
Arrive airport【上海浦东】China Post

* Sep 15, 201610:00 am
【 Shenzhen (China)互换局】Export customs clearedChina Post

* Sep 15, 201612:42 am
【 Shenzhen (China)互换局】Export security scanChina Post

* Sep 14, 201610:18 pm
Leaving parcel center【 Shenzhen (China) International bulk mail processing center】China Post

* Sep 14, 201602:49 pm
【 Shenzhen (China) International bulk mail processing center】Customs scan by parcel centerChina Post

* Sep 14, 201608:01 am
【 Shenzhen (China) International bulk mail processing center】Shipment received by parcel centerChina Post


RF350229298CN

* Sep 15, 201610:00 am
Leaving parcel centerChina Post


* Sep 15, 201610:00 am
Leaving airport going to next airport/seaportChina Post


* Sep 15, 201609:22 am
Arrive airportChina Post


* Sep 14, 201602:03 pm
Partito dal Centro Scambi InternazionaleChina Post


* Sep 14, 201609:05 am
Export customs clearedChina Post


* Sep 14, 201612:20 am
Export security scanChina Post


* Sep 13, 201602:21 pm
Leaving parcel centerChina Post


* Sep 13, 201602:00 pm
Customs scan by parcel centerChina Post


* Sep 13, 201604:19 am
Shipment received by parcel centerChina Post


* Sep 13, 201601:13 am
Presa in carico all'esteroChina


My question is, have I to wait still more days or open a dispute for a lost parcel?