The event attracts visitors and exhibitors from all over the country as well as top experts from around the world that are represented with pavilions at the fair. (https://www.tradefairdates.com/Securex-South-Africa-M13269/Johannesburg.html)

The bold part is confusing. It seems that "that" refers to "top experts", but how can experts be represented with pavilion? None of the dictionary meaning for "represent" seems to fit in this context. Does this mean "top experts who gather in pavilions at the fair"?