Feb 02, 2012. /Lesprom Network/. Ari Viinikkala has been appointed to CFO of Vaahto Group Plc Oyj since February 1, 2012, as the company said in a press release received by Lesprom Network. He has formerly been employed by Dynea as SVP Finance, Europe. Earlier he has served as Director, Corporate Controller of GS-Hydro Group and had several financial management positions within KONE in Finland and in abroad. Vaahto Group is a globally operating high technology company serving process industry in the fields of paper-making technology and process technology.