This sounds like a warehousing and shipping operation to me. Calling Germany an exporter seems like calling an Amazon fulfillment center a "manufacturer" of the products they ship to customers. Or calling Sweet Maria's or Coffee Bean Corral or Happy Mug coffee "growers".
But maybe I don't understand the terminology, and I am definitely out of the loop on mass market coffee.
Actually, Tom of Sweet Maria's did try to grow his own coffee here in California, with hilarious results. Behold, Finca West Oakland:
https://legacy.sweetmarias.com/library/finca-west-oakland-gr...