We have a series of broker, individual rep and repping group partners who specialize in product sales within their areas.  These group sites and efforts cater specifically to a manufacturer who wants concentration from experts knowing their product lines and those retailers and distributors that are prominent in those formats.
There are eleven different groups we have created with a lot of crossover for a number of possible reasons (some carry similar sections, product manufacturers are looking for new business, etc).  For trade show marketing we have an office in Las Vegas specifically for the number of key trade shows (relating to most of the internal sales groups) that are always in Las Vegas or at least are here every other year or so.