For Exhibition attendees:

In the case of imports of goods for demonstration, and which are only to be in Norway for up to one year, they can be imported temporarily against a deposit. The customs demand a security for the VAT. This is usually a bank guarantee that the recipient must provide for this fee. When the goods are re-exported, the deposit ceases.

You can also use an ATA carnet. This is a simplified alternative for goods that are to be temporarily introduced for exhibitions, fairs, demonstrations and the like. It is the Chamber of Commerce in the country from which the goods are exported that issues the ATA carnet. You must check with the relevant chamber of commerce what an ATA carnet costs. The ATA carnet acts as a security for customs duties and taxes.