609989- Poland – Advertising and marketing services – Planning and implementation of a campaign regarding the mandatory introduction of the National e-Invoice System ("KSeF") and supporting entrepreneurs in its implementation

This tender with title 609989- Poland – Advertising and marketing services – Planning and implementation of a campaign regarding the mandatory introduction of the National e-Invoice System ("KSeF") and supporting entrepreneurs in its implementation has been published on Bidding Source portal dated 23 Sep 2025 for the country of Poland. It has been categorized on Advertising and marketing services. For similar tenders you can see tenders mentioned below of this page.