Electronic Public Open Competition Of Communication Nens Underneath Limits With No. : 4741/01-04-2025 For The Needs Of The Project Entitled "A Holistic Approach Towards Onsite Hospital Wastewater Treatment (Project Number: 101113941)/Life22-Env-El-Hippocrates € 56.854.50 Non -Vat (€ 70.487.84 Including Vat)