Complex sentence: Green & Black's sells chocolate bars, baking chocolate, and hot chocolate products in the United States, they are sold in stores such as Whole Foods Market, Trader Joe's, Walgreens, among other retailers nationwide.
Split into simpler sentences: Green & Black's sells chocolate bars, baking chocolate, and hot chocolate products in the United States. They are sold in stores such as Whole Foods Market, Trader Joe's, Walgreens, among other retailers nationwide.