contracting authority will inform the contractor in writing that he will be  required to use the electronic system for all communications within a maximum  period of 3 months.  The Contractor will use its best endeavours to facilitate customs procedures and  the freedom from clearance and taxes in accordance with Tax and Customs  Arrangements.  The Contractor shall take the necessary measures to ensure that the financial  contribution of the EU is given adequate publicity. All items supplied under this  Contract must be labelled in accordance with Technical Specifications.  11.1  The amount of the performance guarantee shall be 10% of the total contract  price, including any amounts stipulated in addenda to the contract.  10.1  All goods purchased must originate from an eligible source country as defined  in a Member State of the European Union or a country covered by the by the  Instrument for Pre-Accession Assistance (IPA II) programme. For these  purposes, ‘origin’ means the place where the goods are mined, grown, produced  or manufactured. The origin of the goods must be determined according to the  EU Customs Code or to the relevant international agreement applicable.  9.9  The Contractor must take the necessary measures to ensure the visibility of the  EU financing or co-financing. Such measures must be in accordance with the  applicable rules on the visibility of external action laid down and published by  the Commission. These rules are set out in the Communication and Visibility  Manual for External Actions available from the EuropeAid website at  https://ec.europa.eu/europeaid/funding/communication-and-visibility-manual- eu-external-actions_en. The contractor must also follow the visibility rules set  out in the visibility guideline of the Delegation of the European Union to  Turkey which is available at http://www.avrupa.info.tr/ 8.1 Within one month of the commencement of the Contract, Contractor shall  contact the Contracting Authority in order to receive information about the  Customs procedures, VAT exemption and Special Consumption Tax (SCT),  Motor Vehicle Tax, Special Communication Tax, and/or taxes of equivalent  effect, stamp or registration duties or any other charge having equivalent effect. 7.6 Documents to be provided by the Contractor are defined separately for each  item in the Technical Specifications. Approval of the documents in question  shall be made by the Contracting Authority. Article 9  General obligations  Article 8  Assistance with local regulations  Article 7  Supply of documents  Article 10 Origin  Article 11 Performance guarantee  August 2020 c4d_specialconditions_en.doc  Page 2 of 7 