(EnergyAsia, November 19, Thursday) — Singapore-listed Rotary Engineering Ltd said its net profit after tax and minority interest (PATMI) dropped 11% from S$31.6 million to S$28.1 million for the first nine months of the year. Its revenue were up 9% to S$404.9 million over the same period last year. (US$1=S$1.38). For the third quarter, its…