Open electronic tender for the selection of a contractor to carry out the periodic planned maintenance, with the code name of the manufacturer E-60, on the CATERPILLAR CG 170-16 natural gas engine of the cogeneration complex of the General Hospital of Thessaloniki "Papageorgiou" (CPV: 50710000 -5), of a total budget expenditure of €176,000.00 including VAT. 24% (Decree No. 012/2022) (EXPIRED)