The Hyphen SA group, based in Thessaloniki, is the only institution specializing in educational engineering in Europe. Launched in April 2003, the Hyphen SA group now includes the following brands: hyphen – Publishing Engineering, Th Ariston Project Ltd – International Think Tank for Educational Methodology, Elaeon – Traineing Centers on Skills Agenda 2020, and Parker.Stergis.Publishing – Special Editions.