Invitation To Participate In The Negotiation Process For The Execution Of The Procurement "Supply Of Food And Other Groceries Consumables For The Needs Of The Municipal Buildings Of The Kindergartens, Kapi, Kifi And Syssiti Of The Directorate Of Social Services Of The Municipality Of Rethymno" For The Departments: 4 (Frozen Fish Products), 5 (Bakery Products) &Amp; 7 (Olive Oil) According To Article 32 Par. 2, Approx. A' Of N. 4412/2016