httpwebwitch - 1:03 pm on Apr 22, 2013 (gmt 0)
It would be bad for anyone but a lawyer to advise you about these things!
Perhaps an obvious question is: why do you need an LLC in the USA? Are there impediments that prevent you from running your business from China?
While it's likely that some WebmasterWorld members will have experience with these kinds of problems, I should warn that regardless of what advice you receive, you should consult with an expert (lawyer) before taking steps toward registering an LLC.