Keum Chun-soo, head of Hanwha Group 's strategic planning office, was named the vice chairman of the group. Keum has led a number of Hanwha's high profile corporate restructuring cases including a merger between the group's two affiliates -- Hanwha Q CELLS and Hanwha SolarOne -- and the acquisition of four defense and chemical units from Samsung Group. Keum is the only vice chairman within the group. The group also promoted its legal team leader Cho Hyun-il from a vice president position to a president post.