Established by CRIMM (Changsha Research Institute of Mining and Metallurgy), Kingray has registered capital of RMB 106.70 million and total assets over RMB1000 million. It is comprised of several subsidiaries and holding companies, most of which have been awarded ISO9001 certification. The major business of Kingray is R&D and production of basic electronic materials and superhard materials. Kingray diamond tools factory has been developed into a leading manufacturer in China of diamond tools, such as diamond saw blades, segments, core drill bits, abrasive wheels, grinding wheels, polishing pads, etc.