Tokai Carbon Co., Ltd. is a Japanese company. The company is a developer and stockist of graphite material for use in nuclear power, particularly electrical discharge machining electrode, high temperature, and mechanical applications. The company was founded in 1918 as Tokai Electrode Mfg. Co. Ltd. with a plant in Nagoya and the head office in Tokyo. In 1975 it changed to its present name, Tokai Carbon Co., Ltd. It is listed on the first section of the Tokyo Stock Exchange and is a constituent of the Nikkei 225 stock index. Wikipedia