Swedish board producer Korsnäs, member of the Kinnevik investment group, improved its operating margin to 10.6 percent 2009, compared with 6.7 percent 2008.Korsnäs’ operating result 2009 was 851 million Kronor (429). In the fourth quarter, Korsnäs’ operating result was 242 million Kronor (-67).The Kinnevik group showed a very strong improvement 2009 compared to 2008.Duni, producer of tissue and table top products, reports a result after tax of 336 million Kronor (191). Duni’s net sales amounted to 4,220 million Kronor (4,099). Result per share was 7.15 Kronor (4.06).