26.5  In order to obtain payments, the contractor must forward to the authority  referred to in paragraph 26.1 above:  a) For the 40% pre-financing, in addition to the performance guarantee, the  invoice and the pre-financing guarantee. b) For the 60 % balance, the invoice(s) in triplicate together with the request  for provisional acceptance of the supplies.  26.9 The contract doesn’t include a price revision clause. 28.2 By derogation from Article 28.2 of the general conditions, once the deadline  laid down in Article 26.3 has expired, the contractor shall, upon demand, be  entitled to late-payment interest at the rate and for the period mentioned in the  general conditions. The demand must be submitted within two months of  receiving late payment.  29.3 The packaging shall remain the property of the contractor subject to  environmental considerations.  29.5 A delivery statement drawn up by the Contractor shall include list of items to be  delivered, amount of items to be delivered, indication that the goods delivered  have been in perfect condition when packed at manufacturing site. 29.6 Each package must be clearly marked with the delivery destination address as in Annex II requirements and the content of each package. In addition, all  packages should be marked as follows:   The Name of the Contracting Authority;  Project Title;   Contract number and Date: 29.7 Delivery shall be deemed to have been made when there is written evidence  available to both Parties that delivery of the supplies has taken place in  accordance with the terms of the contract. The documentation requested to  prove this are invoice(s), delivery statements, and acceptance of delivery  statement.  Number of the package ( insert name of lot - supplies ) The certificate of provisional acceptance must be issued using the template in Annex C11. The Contractor shall submit to the representative of the Contracting Authority (3) three  signed copies of the Provisional Acceptance Certificate, together with the request for  provisional acceptance.  The Provisional Acceptance Certificate shall be:   issued by the Contracting Authority as stipulated in Article 31 of the General  Conditions;   Signed by representatives of both the Contracting Authority and Final Beneficiary.  August 2020 c4d_specialconditions_en.doc  Page 5 of 6  Article 31 Provisional acceptance  Article 29 Delivery  Article 28 Delayed payments 