• 1998- “Hellenic Environmental Technology S.A.” (EL.TE.PE S.A.) is established.
• 2001- Issue of Law 2939: Alternative Management of packaging and other products.
• 2004- Issue of Presidential Decree 82: Measures, terms and program for alternative management of Waste Lubricating Oils.
• 2004- Start of operations of Hellenic Environmental Technology S.A. as National Collective System of Alternative Administration of Waste Lubricating Oils.
• 2013 – The company’s name changes from “EL.TE.PE S.A.” to “ENDIALE. S.A.”