San Pedro Garza García / MX. (gr) Gruma S.A.B. de C.V., one of the world´s leading tortilla and corn flour producers, announced that Standard + Poor´s Ratings Services (S+P), based on Gruma´s better than expected performance and lower debt levels, revised its outlook on the global scale corporate credit rating on Gruma to «positive» from «stable». Also, S+P affirmed its «BB+» global scale corporate and debt ratings on the company. With leading brands in most of its markets, Gruma has operations in the United States, Mexico, Central America, Europe, Asia, and Oceania, and exports to more than 100 countries worldwide. Gruma has approximately 17’000 employees and 77 plants. In 2013, Gruma had net sales of 3.8 billion USD (excluding the Venezuelan operations and Molinera de México), of which 67 percent came from non-Mexican operations.