Moody’s has revised the outlook on Stirol’s B3 corporate family and bond ratings from negative to stable, the agency reported on Friday. Moody’s based its decision on strongly efficiency increases since 2006, which has been reflected in: prompt adjustment of the company’s product mix; greater focus on energy efficiency through building its own power generation capacities; investments into production technology to minimize gas consumption; and increasing the share of higher value-added non-fertilizer products in the product porfolio. In March 2007, Moody’s upgraded Stirol’s rating from Caa1 to B3 and affirmed a negative outlook.