 2019  Contract number: [ complete ]  I.3.5  Renewal of the FWC I.4. A PPOINTMENT OF THE CONTRACTOR AND IMPLEMENTATION OF THE  FWC  I.4.1 Appointment of the contractor I.4.2 Period of provision of the services  I.4.3 Implementation of single FWC  I.3.4 The parties must sign any specific contract and order form before the FWC expires.  The FWC continues to apply to such specific contracts and order forms after its expiry.  The services relating to such specific contracts and order forms must be performed no  later than six months after the expiry of the FWC. The FWC is renewed automatically three times for 12 months each, unless one of the parties  receives  formal notification  to the contrary at least three months before the end of the ongoing  duration. Renewal does not change or postpone any existing obligations. The contracting authority appoints the contractor for a single FWC.  The period for the provision of the services starts to run from the date on which the specific  contract or order form is signed by the last party or the date indicated in the specific contract or  order form. The contracting authority orders services by sending the contractor a request for services or an  order form in paper format or by e-mail or via  e-PRIOR . Within 5 working days, the contractor must either:  - send the specific tender or order form back to the contracting authority signed and dated; or  - send an explanation of why it cannot accept the request or order. In case a request for services has been sent, and if the contracting authority approves the specific  tender, it then sends a specific contract or an order form to the contractor. The contractor must  send the specific contract or order form back to the contracting authority signed and dated  within 5 working days of receipt.  If the contractor repeatedly refuses to send a specific offer or sign a specific contract or an order  form or fails to send them back on time, the contractor may be considered in breach of its  obligations under this FWC as set out in Article II.18.1 (c).  6 