|March 31st, 2021||Design Office moved to Tokyo Sales Office.|
|April 1st, 2019||Model changed from ESD Series 'Separate Type ESD40 II Model' to 'Separate Type ESD40 III Model'.|
|April 1st, 2019||Tokyo Sales Office established in Sumida Ward, Tokyo Prefecture.
Niigata Sales Office established in Joetsu City, Niigata Prefecture.
|July 22th, 2018||Matsuyama Sales Office closed down.|
|January 22nd, 2018||Model changed from ESD Series 'Separate Type ESD210 Model' to 'Separate Type ESD210 II Model'.|
|March 31st, 2016||In order to meet a wider variety of customer's needs, we have opened an English version of our corporate site.|
|December 21st, 2015||In order to make it easier to use and improve page composition and site design, we have given our corporate site a complete overhaul.|
|September 1st, 2015||Our ESD series 'Separate Type ESD150 Model' is now being made and sold.|
|April 26th, 2013||Our spring drill boring system has been registered with the Ministry of Land, Infrastructure, Transport and Tourism's new technology information system (NETIS)
(Registration No. SK-130007-A)
|March 31st, 2013||Our ESD series 'Crawler Type ESDC11 Model' is now being made and sold.|