I think that as this is a US-based site, and English is the lingua franca of most business and international trade & industry, creating a completely separate forum/subforum dedicated to a particular other tongue would be problematic and limit the amount of discussion/assistance available, as well as shutting out all others not conversant in the given language.
We have many multi-lingual members, and I know that there have been several posts moved temporarily into a more comfortable language for the newcomer, as well as PM's between members.