On PackageRadar website «Customs duties applied to package» status means these statuses of Aliexpress Standard Shipping:
With the use of our tracking form you can easily check the status of your package. Also if you want to tracking Aliexpress Standard Shipping and get your package location updates to your e-mail, you can Register on our website.
Aliexpress Standard Shipping — is not the only postal service that you can track at PackageRadar. See full list of postal services available.