Pyrethrum history in East Africa can be traced back to the post-World-War II era, where for several political and economic reasons, Pyrethrum growing flourished in East Africa. English and American interests introduced pyrethrum cultivation to East Africa during World War II to replace flower production lost during fighting in China. As a result, Kenya and Tanzania became prime growing regions. MGK licensed extraction and refining technology to the Pyrethrum Board of Kenya (“PBK”), which became a leading producer of pyrethrum in East Africa. PBK’s headquarters and production facility is located in Nakuru, Kenya. PBK collects flowers from growers in several regions in Kenya.