Barry Bleahen, an executive at Aramark Refreshment Services, found the presentation on green marketing by Wendell Simonson, director of marketing at Eco Products, very insightful during the National Automatic Merchandising Association (NAMA) CoffeeTea&Water Show in Las Vegas. Interviewed by Elliot Maras, editor of Automatic Merchandiser, Bleahen said sustainable products are challenging due to the complexities of government requirements and the need to effectively communicate the issue to customers.