(EnergyAsia, August 14) — State energy company PTT has signed separate contracts with two companies to look into jointly producing biodiesel from palm oil.             It will work with Thaksin Palm (1978) Co Ltd to establish a 300,000-liter-per-day plant in Surathani Province by 2008 and with Bio Energy Plus Co Ltd to build a 200,000-liter-per-day…