|January 1966||Daiichi Kasei Co., Ltd. was established in Hachioji, Tokyo to manufacture and sell synthetic leather.|
|August 1979||Opened Saitama Office in Gyoda, Saitama Prefecture|
|October 1979||Completed wet solvent (DMF) collection equipment at Saitama Office. Began recycling solvent.|
|September 1987||Opened new laboratory in Hachioji, Tokyo.|
|October 1998||Established DSC Co., Ltd., fully financed by the company, for investment business purposes.|
|July 1999||Head Office, Saitama Office and laboratory received ISO 9001 certification.|
|February 2003||Registered stock with the Japan Securities Dealers Association over-the-counter market.|
|December 2004||Terminated registration with the Japan Securities Dealers Association over-the-counter market and listed stock on the JASDAQ Securities Exchange.|
|July 2006||Relocated Head Office to Myoujin-cho, Hachioji, Tokyo.|
|March 2016||Opened Gunma Plant in Ora-machi, Ora-gun, Gunma Prefecture.|
|February 2017||Made Ultrafabrics, LLC (currently Ultrafabrics Inc.) a wholly-owned subsidiary.|
|May 2017||Established subsidiary Daiichi Kasei Bunkatsu Junbi Co., Ltd. (currently Daiichi Kasei Co., Ltd.), fully financed by the company.|
|June 2017||Changed the end of the fiscal year from March to December at an Ordinary General Meeting of Shareholders.|
|September 2017||Acquired and merged with DSC Co., Ltd.|
|October 2017||Daichi Kasei Co., Ltd. changed trade name to Ultrafabrics Holdings Co., Ltd. Switched to a pure holding system and a company with audit and supervisory committee.
Daiichi Kasei Bunkatsu Junbi Co., Ltd. changed trade name to Daiichi Kasei Co., Ltd. Business continued via an absorption-type company split.