Rigaku Corporation is an international manufacturer an distributor of scientific, analytical and industrial instrumentation specializing in X-ray related technologies, including X-ray crystallography, X-ray diffraction (XRD), X-ray reflectivity and X-ray fluorescence (XRF). Rigaku is headquartered in Tokyo, Japan, with additional production, research and laboratory facilities located in both Japan and the United States. Subsidiaries in North America include Rigaku Americas Corporation (The Woodlands, Texas, USA) and Rigaku Innovative Technologies (Auburn Hills, Michigan, USA). The European branch is located in Sevenoaks, Kent.