September 1991
Establishment of the company

September 1991
Establishment of the company
June 2007
Relocation of the headquarters to Aoyama Shinmachi 8, Nagaoka City
May 2011
Establishment of the 1st factory
June 2011
Establishment of the 4th factory
September 2011
Obtained JIS Q 9001 and JIS Q 14001 certification
June 2012
Establishment of the 2nd factory
January 2013
Establishment of the 3rd factory
September 2014
Establishment of the 5th and 6th factories
March 2016
Annual sales exceeded 1 billion yen
March 2017
Annual sales exceeded 2 billion yen
November 2018
Establishment of the 7th factory
March 2019
Establishment of the Nanyo factory
June 2019
Establishment of the 8th factory
August 2019
Establishment of the 9th factory,
September 2020
Establishment of the 10th factory (Assembly plant)
March 2025
The welding and sheet metal departments were relocated from the former Nanyo factory to the 6th factory.