Property developer and construction firm Koh Brothers has said its full-year net profit fell 30 per cent in 2008 to S$27.7 million. The fall was mainly due to the absence of revaluation gains which it had booked in the previous financial year. Revenue for the 12 months ended December dropped 24 per cent to S$216 million. CEO Francis Koh said the company is in the midst of a challenging period and will...