1927

Sumitomo Electric Wire & Cable Works (currently Sumitomo Electric Industries, Ltd.) started study/research of cemented carbide

1928

Succeeded in producing cemented carbide wire and cable drawing dies for private use

1931

カジノ 勝ち やすい ゲームn of cemented carbide cutting tools as "IGETALLOY"

1941

Opened the Itami IGETALLOY Works

1964

Established KYUSHU SEIMITSU KOGYO CO., LTD
(currently KYUSHU SUMIDEN SEIMITSU LTD.)

1972

Established HOKKAIDO SUMIDEN PRECISION CO., LTD
(Mass production facility for throw-away inserts)

1977

カジノ 勝ち やすい ゲームn and marketing of CBN sintered tool "SUMIBORON"

1978

カジノ 勝ち やすい ゲームn and marketing of diamond sintered tool "SUMIDIA"

1981

Started recycling business of tungsten from disposed cemented carbide using a zinc treatment method

1984

Established TOKAI PRECISION CO., LTD (currently TOKAI SUMIDEN PRECISION Co., Ltd.)

1985

Commercialized synthetic monocrystal diamond "SUMICRYSTAL"

1994

カジノ 勝ち やすい ゲームn and marketing of laser-cut optical parts

2003

SUMITOMO ELECTRIC HARDMETAL CORP. started operation

2006

Established first "カジノ 勝ち やすい ゲームNGINEERING CENTER" in Japan

2017

Established TOHOKU SUMIDEN PRECISION CO., LTD

We will continue to push forward with the development of high-quality, innovative technologies required in the global market.

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