The Wrigley Company (Wm. Wrigley Jr. Company) is the world's largest chewing gum manufacturer, founded in 1891 and headquartered in Chicago. Wrigley initially sold soap, but later transformed into chewing gum production. 2008, the acquisition of Wrigley. Wrigley's products include Green Arrow, Yield, Kingfisher, Rainbow Candy, Dada, and True Knowledge Stick.