|1969||04||Company founded, plant built in Daito-cho, Ogasa-gun. Capital 1,500,000 yen. Heat treatment of magnetic materials and aluminum castings.|
|1972||10||Main plant built in Hagioka, Hamamatsu. Capital increased to 4,500,000 yen.|
|1975||03||Began production of CO2 arc welding torches and TIG welding torches.|
|1977||08||Capital increased to 9,000,000 yen.|
|Expanded the manufacture of welding robot equipment.
Began manufacturing welding fume collector systems.
|1984||04||Capital increased to 27,000,000 yen.|
|1988||04||Main office and plant moved to Hamamatsu Technological Park, Okubo-cho, Hamamatsu.|
|1992||03||Completed the second-stage expansion work, operating as a new plant.|
|Began sales of plasma/laser parts.
Began sales of laser optical parts.
|2005||07||Established Suzhou Tokin Machine & Metal Corporation.|
|2010||04||Expanded the development and handling of robotic peripheral
Began sales of "nozzle cleaning stations" and "wire switching systems".
|2015||06||Established Tokin America Corporation.|
|2016||02||Built No.3 plant and expanded production capacity.|