Commission Regulation (EC) No 1828/2006 The first section of this document ("Information and Publicity", page 11) sets up the information and publicity measures to be carried out by the Member States concerning assistance from the Structural Funds. Please read carefully before setting up your communication strategy.See also the EC Regulation 846/2009 amending EC 1828/2006
The joint signature is an obligatory component of any project communication item: not only is it a legal requirement, but it is also a seal of approval from the European Union. For its use in plaques, check Art.8 of Commission Regulation (EC) No 1828/2006
Select the PDF file -equivalent to EPS- for a high resolution result in publications, plaques, etc.