This is probably a "get what you pay for" type deal. They are essentially a bootleg version of the Race Tech ones. You can find adjustment instructions on the Race Tech website, but that is specific to their Gold Valve Emulator, so it may help, but it may not.
The installation of emulators requires drilling a certain number of specific sized holes in your damper rod. Again, its apples to oranges here, so that advice may not be sound. At this point, unless that vendor can give you instructions, either return them and buy the real thing, or just run them and see how you like the change.
