Hi !
If you can read Chinese, the info is here:
http://www.pstv-us.net/
Their office is here in LA, but their authorized dealers are all over the US. and Canada. The web site has a list of all authorized dealers. My impression is that they want to deal with Chinese alone, no american dealers. Well, at least, if you really want to become one of their dealers, you can give them a call, they do speak english.