Klein Bros. Snacks & Packaged Nut Division is known as Jumbo Brand Sunflower Seeds. The company is located in Stockton, California, where the Klein family has been working and growing for four generations. Jumbo Snacks produces Jumbo Sunflower Seeds and Arroyo Seco Nuts. Because their Jumbo Sunflower Seeds are “Grown Bigger to Taste Better,” they’re easier to enjoy and more filling. Jumbo Snacks also offers co-packing services including shrink wrapping, kitting, repacking, sticker printing, as well as many other services.