Comercial Mexicana store Zamora, Michoac n. Comercial Mexicana is a self-service company in Mexico with a total of 214 convenience stores in different formats and 71 restaurants in 42 cities across the country at December 31, 2007. Its business formats are focused to meet the needs of different socioeconomic levels and include everything from groceries and perishables, to general merchandise and clothing. Headquartered in Mexico City, Mexico.