OLNE SA Headquarters are located in Chalkis in a recently renovated neoclassical building at Liaska 1 &Papalouka Str near Old Evripos Bridge.
Office Hours: Monday - Friday / 08:00 - 16:00
Contact Phones: +30 22210 22275 / +30 22210 23701
Fax: +30 22210 22161
You can also contact OLNE by submitting the contact form found here.