Business organizations are now welcome to skip this post. For public clients, however, it will be interesting.
The official directory of prequalified companies for the supply and service sector lists all companies that are suitable for public contracts. You have proven this via order advice centers or chambers of commerce and industry. Public institutions can safely rely on this through the serious examination.
Check the suitability of the company using the official register of the Chamber of Industry and Commerce. Of course, bb-net is one of the qualified companies.