Delivers in Beijing, and has a store around The Place. But they're price are a lot higher than you can get elsewhere.
I bought a BSN N.O. Xplode and Optimum 100% Whey from these people, as well as 2 shakers and some wristband with a hook for better grips. It took about 2 weeks before I got the products, and they sent me the wrong flavour on both, but they were ok in taste so I didnt bother complaining. They also sent me a free bag of some white powder, but I didnt touch this at all before I knew what it was. They said it's just another flavour of the protein. Same brand etc, just another taste.
And the price was realy good, 860 for both (5lb protein, 2.25lb n.o. xplode + 2 shakers for 20rmb each + 1 wristband thingy for 40rmb)
But you need some Chinese friend to help you order :-)