WDB Holdings Co., Ltd. operates as a holding company which provides management to its group companies. It operates through the following segments: Human Resource Services, Contract Research Organization (CRO), and Others. The Human Resource Services segment provides dispatch services in the fields of physical science and engineering. The CRO segment offers support from basic research to clinical trials in the pharmaceutical, medical, cosmetics, and other industries. The Others segment includes organic compound manufacturing, aquaculture sales, and injection molding auxiliary equipment manufacturing and development businesses. The company was founded on July 6, 1985 and is headquartered in Himeji, Japan.