Toyo Tanso
Japanese carbon and graphite products manufacturer founded in 1941, known as a pioneer in isotropic graphite.
Last updated September 16, 2026
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Overview
Toyo Tanso Co., Ltd. is a Japanese manufacturer of carbon and graphite products. It began in 1941 as Kondo Carbon Industry Works, manufacturing carbon brushes, and was renamed Toyo Tanso Co., Ltd. in 1949. In 1974 it succeeded in mass-producing large isotropic graphite. Its carbon products are used in fields including semiconductors, automobiles, industrial machinery, home appliances, medical equipment, and aerospace. The company operates production and sales bases across more than a dozen countries, including China, the United States, Europe, and Asia.
History
Toyo Tanso began in February 1941 with the founding of Kondo Carbon Industry Works, which started manufacturing carbon brushes. In July 1947, Kondo Carbon Industry Co., Ltd. was established, and in November 1949 the company changed its name to Toyo Tanso Co., Ltd. It opened an Osaka sales office in October 1957 and a Tokyo sales office in October 1960. In February 1961 it established the Shikoku Plant. In March 1974 it established the Onohara Plant and succeeded in mass-producing large isotropic graphite. In August 1980 the Shikoku Plant was separated to form Totan Kako Co., Ltd. In August 1981 the Hagiwara Plant was established, and in December 1985 the Takuma Plant was established. Overseas expansion followed: in August 1988 GRAPHITES TECHNOLOGIE et INDUSTRIE S.A. (now TOYO TANSO FRANCE S.A.) was established in France; in April 1991 GRAPHITE TECHNOLOGY APPLICATIONS S.R.L. was established in Italy; in May 1991 GTD GRAPHIT TECHNOLOGIE GmbH (now TOYO TANSO GERMANY GmbH) was established in Germany; in November 1991 Seiko Carbon Co., Ltd. was established in Taiwan through share acquisition, and TOYO TANSO USA, INC was established in the United States. In August 1994 Shanghai Toyo Tanso Co., Ltd. was established in China. In January 1997 TOYO TANSO EUROPE S.p.A. was established in Italy through full share acquisition. In April 1999 the Iwaki Plant was established, and in September 1999 Owada Carbon Industry Co., Ltd. was established through full share acquisition. In April 2000 Shanghai Yongxin Toyo Tanso Co., Ltd. was established in China, and in September 2003 Shanghai Toyo Tanso Industry Co., Ltd. was established in China. In March 2006 the company listed its shares on the First Section of the Tokyo Stock Exchange, and in September 2006 TOYO TANSO KOREA CO., LTD. was established in Korea. In December 2007 the head office was relocated to Umeda, Kita-ku, Osaka, and the former head office was reorganized as the Kondo Teruhisa Memorial Toyo Tanso General Development Center. In March 2008 TOYO TANSO (THAILAND) CO., LTD. was established in Thailand. In August 2010 TOYO TANSO SINGAPORE PTE. LTD. was established in Singapore. In November 2013 the head office was relocated to Takeshima, Nishiyodogawa-ku, Osaka. In September 2014 Toyo Tanso (Zhejiang) Co., Ltd. was established in China, and in May 2015 PT. TOYO TANSO INDONESIA was established in Indonesia.
Products and positioning
Pioneer in carbon, pursuing original and innovative carbon specialized in high-performance fields.
Specialty graphite products
C/C composites
Graphite sheets
Mechanical carbon products
Carbon brush products
Surface treatment materials
Sources5 sources
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