Developer Koh Brothers has posted a near 10-fold jump in full-year net profit - rising 877 percent to S$39.7 million. The sharp spike in the bottomline was due mainly to fair value gains on investment properties. There was also an exceptional gain of S$5.6 million after the company sold three units in Shantou, China. Sales rose 10 percent to S$285.5 million and Koh Brothers remains bullish about its...