If you provide certain services in an EU Member State or wish to establish yourself there, you must present the so-called EU certificate in some Member States. With this certificate, you prove that you are legally and permanently providing this service in Germany.
or your company is a member of a chamber (e.g. Chamber of Crafts), this is responsible for you. Otherwise, please contact the Chamber of Industry and Commerce.

In order to demonstrate that the services are provided on a permanent and lawful basis, you must state the specific activity you carry out and its duration. In addition to a description of the company's activities, you must state whether you have worked as a self-employed person, as the manager of a company or branch office, in a managerial capacity or as an employee.
function or as an employee.