Various freight forwarding companies also have their own specialties, for example, some only do sea transportation, some only do air transportation, and some only do railway transportation. Similarly, some freight forwarders only accept whole containers, some only accept bulk cargo, and some only accept bulk cargo.
Of course, the freight forwarding company is also an intermediary service organization. As long as the guests don't care about the freight or the price of several batches, all freight forwarding companies can do bulk cargo, and it's a big deal to do it n times.