The fact that Nikon, Canon or whoever, don't actually manufacture their own Battery Grips, Batteries, Flashguns etc. does not mean that they simply farm it out and let the manufacturer stick Nikon (or whoever) labels on it. The Camera manufacturer will regularly audit the production lines, test the output and perform all the other quality assurance functions before putting the item in the appropriate box. The same cannot be said for products that don't carry the camera manufacturers name but appear to be nearly identical. The label on a product doesn't always reflect who made it, I have to wonder how often the two are the same?