With the GDI BLine mobile app you can communicate directly with the address management of your GDI Business-Line. This enables central maintenance of all company contact details of customers, suppliers, interested parties and employees.   The tedious maintenance of contact data is no longer necessary. Every user is always up to date. From the app you can contact the desired contact person directly by phone or email, display his address on a map and start the navigation. The GDI BLine mobile app