Wysong is the funniest pet food company, because they've cracked the hippie code. See, most pet foods have intimidatingly long ingredient lists, because canned meat alone isn't a balanced diet for dogs and cats, so the manufacturers add in a bunch of vitamins and minerals and whatnot. This is Artificial and therefore bad.
Wysong, however, sells canned meat with nothing added. This is Pure and therefore good. But because canned meat alone isn't a balanced diet for dogs and cats, Wysong also sells a vitamin/mineral/whatnot mix that you add to your pets' meals. This is a Supplement and therefore good.
I don't actually love this system, because there's too much risk of owners skipping the supplement or miscalculating the dose, but I have to respect the chutzpah.

