(EnergyAsia, March 4 2010, Thursday) — Singapore-listed Rotary Engineering Limited has reported its highest-ever net profit of S$54.2 million on record revenues of S$551.9 million for the financial year ending December 31 2009. (US$1=S$1.4). Its net profit grew 7% from S$50.9 million the previous year, while its revenues rose 6% from $520.1 million previously. The…