1.8 Identification of the tenderer  1.9 Language  1.10 Additional information  1.11 Use of Electronic Procurement Tools (e-Procurement)  For additional information on ECDC’s e-procurement tools, please refer to:  https://ecdc.europa.eu/en/about-us/procurement-and-grants.  The successful tenderer(s) shall take the appropriate measures to be compliant with e-invoicing and  submit invoices through the system. The successful tenderer(s), whose tender was submitted as a joint  tender, may be required to acquire a Global Location Number (GLN), at no additional cost for ECDC.  By virtue of Point 11.1(e) of Annex 1 FR (Financial Regulation 2018/1046), ECDC reserves the option to  launch further negotiated procedure, with the contractor chosen as a result of the present call for tender,  for new services consisting in the repetition of similar services during the three years following the  signature of the original contract, for a maximum value of 50% of the initial contractual amount.  Tenders must be submitted in one of the official languages of the European Union. ECDC prefers, however,  to receive documentation in English. Nonetheless, the choice of language will be not play any role in the  consideration of the tender.  The tenderer (and each member of the group in case of joint tender) must declare whether it is a Small or  Medium Size Enterprise in accordance with Commission Recommendation 2003/361/EC. This information  is used for statistical purposes only.  The tenderer (or the leader in case of joint tender) must provide a Financial Identification Form with its  supporting documents. Only one form per tender should be submitted. No form is needed for  subcontractors and other members of the group in case of joint tender. The form is available on:  http://ec.europa.eu/budget/contracts_grants/info_contracts/index_en.cfm Tenderers that are already registered in ECDC’s accounting system (i.e. they have already been direct  contractors) must provide the form but are not obliged to provide the supporting evidence.  All tenderers (including all members of the group in case of joint tender) must provide a signed Legal Entity  Form with its supporting evidence. The form is available on:  http://ec.europa.eu/budget/contracts_grants/info_contracts/legal_entities/legal_entities_en.cfm In case of joint tender, the cover letter must be signed either by an authorised representative for each  member, or by the leader authorised by the other members with powers of attorney. The signed powers  of attorney must be included in the tender as well. Subcontractors that are identified in the tender must  provide a letter of intent signed by an authorised representative stating their willingness to provide the  services presented in the tender and in line with the present tender specifications. The tender must include a  cover letter  signed by an authorised representative presenting the name of the  tenderer (including all entities in case of joint tender) and identified subcontractors if applicable, and the  name of the single contact point (leader) in relation to this procedure. 8 