About us

Corporate History

Oct.1937 Asahi Diamond Industrial Co., Ltd. founded in Tokyo’s Shinagawa Ward for manufacturing and marketing diamond tools.
June 1938 Construction of Yukigaya Factory in Ota Ward, Tokyo, begins
Jan.1944 Ueno Factory (formerly Mie Factory) completed in Ueno City (now Iga City), Mie Prefecture, launching diamond die sales.
Dec.1945 Corporate name changed to Asahi Kogei
May 1950 Head office moves to Chuo Ward, Tokyo
Jan.1951 Diamond bit sales launched.
Apr.1952 Diamond wheel sales launched.
May 1952 Corporate name changed back to Asahi Diamond Industrial
Feb.1953 Electroplated tool sales launched.
Oct.1955 Setagaya Factory completed in Ikejiri, Setagaya Ward, Tokyo, to expand diamond bit production.
May 1956 Diamond blade sales launched.
Apr.1961 Vitrified bond wheel sales launched
Aug.1961 ID blade sales launched
Sept.1965 Tamagawa Factory completed in Takatsu Ward, Kawasaki City, launching rotary dresser sales
May 1968 Joint venture Taiwan Diamond Industrial Co., Ltd. (now Taiwan Asahi Diamond Industrial Co., Ltd.) founded in Taiwan
Apr.1969 CBN abrasive powder sales launched
Sept.1972 Participation in Sun Diamond Kogyo (now Yamanashi Asahi Diamond Industrial Co., Ltd.)
Oct.1972 Listed on the Second Section of the Tokyo Stock Exchange
Feb.1975 Head office moves to Minato Ward, Tokyo
July 1976 Diamond jewelry sales launched
May 1978 Shinhan Diamond Industrial Co. founded as joint venture in South Korea
Sept.1978 Listed on the First Section of the Tokyo Stock Exchange
Apr.1980 TAB tool sales launched
Aug.1984 Mie Daini Factory completed in Ueno City (now Iga City), Mie Prefecture
Aug.1988 Head office moves to Chiyoda Ward, Tokyo
Mar.1989 Chiba Tsurumai Factory and Research and Development Center completed in Ichihara City, Chiba Prefecture
June 1989 Wire saw sales launched
July 1991 Head office moves to New Otani Garden Court, Kioi-cho, Chiyoda Ward, Tokyo
Sept.1992 Asahi Diamond Industrial wins the first TSE-listed company award
June 1995 Chiba Tsurumai Factory acquires ISO9002 certification
Sept.1995 Asahi Diamond Industrial wins the fourth TSE-listed company award
Dec.1995 Mie Factory, Mie No. 2 Factory, and Tamagawa Factory acquire ISO9002 certification
Mar.1999 Chiba No. 2 Factory completed in Chosei County, Chiba Prefecture
June 2001 Second building of Chiba No. 2 Factory completed
July 2002 Asahi Diamond America, Inc. founded
July 2002 Shanghai Xu Hui Diamond Industrial Co., Ltd. founded.
July 2002 Asahi Diamond Industrial acquires all shares in PT. Asahi Diamond Industrial Indonesia
Jan.2004 All factories in Japan, Yamanashi Asahi Diamond Industrial Co., Ltd., etc. acquire ISO14001 certification
June 2006 New Mie Factory completed in Iga City, Mie Prefecture, to integrate Mie and Mie No. 2 Factories
July 2006 Hagby-Asahi AB sold to Sandvik AB
Aug.2006 Tamagawa Plant expansion completed
June 2009 Phase 3 building completed at Chiba No. 2 Factory
Jan.2011 Mie Factory’s new building completed
July 2013 Asahi Diamond Industrial acquires all Koremura Co., Ltd. shares

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