This is how JetCarrier shipping from the US works:
If you want to ship something to a customer of yours in Norway,
Sweden, Finland or Denmark:
You can handle the shipment as a regular US customer shipment,
JetCarrier takes care of the rest including exp...
You have a shipment on it's way to Customs declaration but we do not
have a copy of the invoice and can not customs clear your goods until
we have it.
Today it is not very common that seller insert a copy of the invoice
in the shipment, you may have gott...