Recently I get quite a few requests about bitcoin mining hardware from China. This type of hardware is rather new and therefore the companies/websites are also new.
In China there are only a few manufacturers, lots of resellers, and of course lots of scams. I suggest you stick to companies that are known in the Bitcoin community, here are a few:
And if you have specific questions about Bitcoin related software, hardware, whatever, there is a great, very active forum: bitcointalk.org