Who may be the largest manufacturer of maize flour?
Gruma: Gruma, S.A.B. de C.V., known as Gruma, is a Mexican multinational corn flour and tortillas manufacturing company headquartered in San Pedro, near Monterrey, Mexico. Gruma:  It may be the largest corn flour and tortillas manufacturer in the world. Masa: Masa ( ; ] ) is a maize (corn) flour or dough that has been soaked and cooked in an alkaline solution in the nixtamalization process.
Gruma