Aug 13, 2010. /Lesprom Network/. Standard & Poor´s Ratings Services has affirmed Metso’s BBB long-term credit rating and changed the outlook from negative to stable, company said in a statement received by Lesprom Network. At the same time the short-term corporate credit rating was raised to A-2 from A-3. Metso is a global supplier of sustainable technology and services for mining, construction, power generation, automation, recycling and the pulp and paper industries.