|1924.3||Keizo Yamamoto started business at a shop in Tsukiji, Tokyo.|
|1934.2||It was converted to a joint-stock corporation.|
|1941.9||The company was renamed Yamamoto Kogyo Co., Ltd.
Because imports were halted at the start of World War II,
a factory was established in Koganei for the production of precise tools.
Osaka and Nagoya Offices were established.
|1949.2||Yamamoto & Co., Ltd. spun off from Yamamoto Kogyo Co., Ltd. was reestablished for import business on machine tools.|
|1967.9||New head office with showroom was built at the present location.
The company was renamed Yamamoto & Co., Ltd.
|1977.10||Yamamoto & Co., Ltd. was reestablished.
Liaison Office in Germany was established.
|1988.10||Sendai Office was established.|
|1989.10||Nagano Office was established.|
|1996.10||Taiwan Office was established.|
|1997.4||The company was renamed YKT CORPORATION.|
|1997.10||Fukuoka Office was established.|
|2001.3||Listed shares for over-the-counter trading with the Japan Securities Dealers Association.|
|2001.10||YKT (Shanghai) International Trading Co., Ltd. was established in Shanghai, China.|
|2002.4||Acquired shares of Sun Instruments, Inc. which became our subsidiary.|
|2003.10||Merging with Yamamoto Group Co., Ltd. YKT CORPORATION became the surviving company.|
|2005.1||YKT EUROPE GmbH from Liaison Office in Germany was established.|
|2006.12||YKT (TAIWAN) CORPORATION in Taiwan was established.|
|2008.1||Nagoya and Osaka offices branched out.|
|2008.8||New Osaka branch with showroom built at the present location.|
|2015.10||YKT (Thailand) co., Ltd. was established in Bangkok, Thailand.|
|2018.7||Demonstration center was established.|