If you are exporting goods from Sweden you must always declare the goods to Swedish Customs
You can not send goods out of Sweden before Swedish Customs has given its permission. As an exporter you are required to notify the Swedish authorities via a customs clearance - also called a declaration. Swedish Customs controls the declaration via a customs clearance, then you can send the goods out of the country. Customs clearance is conducted in Swedish Customs’ own clearance system, TDS. Here you will find more detailed informasion about customs clearance of exports.
The main areas for export duty:
High goods value
Goods’ value over SEK 5000
For example for goods that are exported for repair and are being returned to Sweden
Re-importation to Sweden
Goods which have been temporarily customs cleared into Sweden
Certain goods, even under a value of SEK 5000, must clear customs regardless.