(EnergyAsia, October 9) — Patkol Plc, a Thailand-listed engineering specialist and freezing machine manufacturer, is carving out a niche as a builder of ethanol plants.   Last week, it announced it has landed a contract to build an ethanol plant worth 3.14 billion baht for T.P.K. Ethanol in Nakhon Ratchasima province. (US$1=37 baht). The…