September, 1969

Tokorozawa Alloy Foundry Co,Ltd. founded. The headquarters was located at Ooaza-Shimoyasumatsu, Tokorozawa-shi, Saitama-ken. Capital : 3 million yen.

October, 1981

The Yamagata factory was built in Aratani, Tendo-shi, Yamagata-ken. Capital : 11 million yen.

May, 1983

The headquarters factory was moved to Matsugou, Tokorozawa-shi, Saitama-ken.

December, 1987

Founded TK Engineering for machine work. Capital : 3 million yen.

January, 1990

The Yamagata factory was moved to Hitoichi-machi, Tendo-shi, Yamagata-ken.

September, 1993

The headquarters was moved to Matsugou, Tokorozawa-shi, Yamagata-ken.

December, 1995

Capital increase.Capital : 10 million yen.

July, 1996

Started manufacturing business of wooden molds for metallic casting. (CAD/CAM)

March, 1999

Built the Yamagata factory in Hitoichi-machi, Tendo-shi, Yamagata-ken for starting a high-volume production of metallic mold casting.

September, 2006

Built the second Yamagata factory.

October, 2006

Certified ISO14001 : 2004.TK Engineering. The headquarters and factory.Tokorozawa Alloy Foundry Co,Ltd.The headquarters and the headquarters factory.

July, 2008

Built a new headquarters factory.

May, 2009

Certified ISO9001 : 2008.Tokorozawa Alloy Foundry Co,Ltd.The headquarters (sales department only)and the second Yamagata factory.

September, 2010

Built a new office building for the headquarters.

September, 2013

Koji Ikeda appointed President & CEO

May, 2016

A new building was built to support operations of the Yamagata second factory.

November, 2017

Introduction of the new X-ray CT scanner.