What is Great Value?
Great Value is a brand sold by Walmart. (1)
Who produced Great Value products?
As a house or store brand, the Great value line does not consist of good produced by Walmart, but is a labeling system for items manufactured and packaged by a number of agricultural and food corporations, such as ConAgra, and Sara Lee. (1)
Resources
1. https://en.wikipedia.org/wiki/List_of_Walmart_brands