 expressed in euros. Tenderers from countries outside the euro zone have to quote their  prices in euro. The price quoted may not be revised in line with exchange rate  movements. It is for the tenderer to bear the risks or the benefits deriving from any  variation.   quoted free of all duties, taxes and other charges, i.e. also free of VAT. - The Declaration on Honour of the candidate (in case of joint tender – the Declarations  on Honour of all group members);  - (If applicable – in the case of joint tender) the power(s) of attorney drawn up using the  model attached in  Annex 4 ).   The European Union Institutions are exempt from such charges in the EU under  Articles 3 and 4 of the Protocol on the Privileges and Immunities of the European  Union of 8 April 1965 annexed to the Treaty on the Functioning of the European  Union. Exemption is granted to the Commission by the governments of the Member  States, either through refunds upon presentation of documentary evidence or by direct  exemption. In case of doubt about the applicable VAT system, it is the tenderer's responsibility to  contact his or her national authorities to clarify the way in which the European Union  is exempt from VAT.  Where a document needs to be signed, the signature must be either hand-written, a qualified  electronic signature or an advanced electronic signature based on a qualified certificate as  defined in Regulation (EU) No 910/2014 on electronic identification and trust services for  electronic transactions in the internal market (the  eIDAS Regulation ).  For electronic signatures see: https://webgate.ec.europa.eu/fpfis/wikis/x/iwX4Dg  All documents must be signed by the signatories (when they are individuals) or by their duly  authorised representatives.  For the following documents, when signed by representatives, candidates/tenderers must  provide evidence for the delegation of the authorisation to sign:  The delegation of the authorisation to sign on behalf of the signatories (including, in the case  of proxy(-ies), the chain of authorisations) must be evidenced by appropriate written evidence  (copy of the notice of appointment of the persons authorised to represent the legal entity in  signing contracts (together or alone), or a copy of the publication of such appointment if the  legislation which applies to signatory requires such publication or a power of attorney). A  document that the  Contracting authority  can access on a national database free of charge does  not need to be submitted if the  Contracting authority  is provided with the exact internet link  and, if applicable, the necessary identification data to retrieve the document.  Page 19 of 32  TEMPLATE: Restricted procedure - Tender specifications Part 1 Administrative Specifications  JRC R.9 - IMS-JRC-S3.1-TMP-0048 - v.1.0 17/02/2020 M(EN)  4.4. Signature policy: how can documents be signed? 