Nov 29, 2012. /Lesprom Network/. The board of Vaahto Group has appointed Ari Viinikkala as CEO of Vaahto Group Plc Oyj as of 30 November 2012. Mr. Viinikkala has served as acting CEO of Vaahto Group Plc Oyj since April 2012, as the company said in a press release received by Lesprom Network. Viinikkala started as CFO of Vaahto Group Plc Oyj at the beginning of February 2012. He has formerly been employed for over ten years by KONE where he had several financial management positions in Finland and abroad. His last position was within Dynea as Senior Vice President, Finance Europe where he was in charge of finance, ERP and process development. Vaahto Group is a globally operating high technology company serving process industry in the fields of pulp and paper machinery and process machinery.