YIOULA Group is the biggest glasswork industry in Balkans. Its companies are in Greece ( Yioula SA and former Cronos SA ), in Bulgaria ( Drujba SA and former Stind SA ), and in Romania ( Stirom SA ). The group products are on glass drink bottling, glass food packaging, glass tableware, bottles, containers, tumblers etc. YIOULA Group has cooperation on glass technology with OWENS ILLINOIS.