(EnergyAsia, February 24 2010, Wednesday) — Singapore engineering firm PEC Ltd said its net profit for the latest quarter to December 2009 surged 66% to S$9.2 million on improved margins. (US$1=S$1.4). For the six months ending December 31, its net profit rose 50% to S$16.3 million. Revenue, however, fell 3% to S$213.4 million due to…