All beverage packaging must be a part of an approved recycling system to be allowed to be sold in Sweden, Returpack's deposit system is one such. Exceptions are beverages that contain more than half of dairy products.
To be able to connect products to the deposit system, you first need to sign an agreement with Returpack. For the agreement it is required that your company is registered for F-tax and VAT in Sweden. For companies outside Sweden but within the EEA, VAT registration (VAT number) is sufficient.