hello,
and when they do that, what do you think will happen? the RMB will go up? this is only partially true, the RMB will go up compared with the $, but it's because the $ will be going down compared with the rest of the world curency. this means expensive gaz and imported goods. China is protecting the $ by keeping their $ stock unused (at great cost for them at the moment) but it will not last forever, and once they stop, it's going to be a bad news.
on a per product basis, it's the manufacturing business owner (often from taiwan) that make the most money.
The government redistributes a lot of that welth in other places (such as public project and construction) and to stabilize the economy (buying US bonds among other things).
regards, cyrille