Danish companies are registered at the Central Business Register (CVR) , which is the central register containing primary data on all businesses in
In addition, CVR contains detailed information on all limited companies, including fiscal reports, management and financial information and status, etc. All this information is available for purchase and download from this website. All major credit cards are accepted.
As all this information and the navigation to reach it is in Danish, non-Danish speaking users are recommended by CVR to access the European Business Registry for an access to information on Danish companies in their own tongue. I assume you will be able access information about Swedish companies there as well.