| October 1965 | Started business as Mochizuki Kogyosho in Fuji City. |
|---|---|
| May 1974 | Moved the company to its current location in Fujinomiya City. |
| May 15, 1975 | Capital : 3 million yen. Established Mochizuki Kogyosho.co.Ltd. |
| February 1994 | Increased capital to 10 million yen. |
| February 1995 | New factory extension. |
| November 2002 | Quality management system ISO9001 : 2000 registered. |
| December 2004 | Ashigara office opened. |
| December 2005 | Environmental management system ISO14001 : 2004 registered. |
| May 2006 | Capital increased to 20 million yen. |
| June 2006 | Yoshida Office opened. |
| October 2006 | Construction Permit : Piping construction Changed from general to specific. Additional application for Machinery and Equipment Installation Business. |
| September 2009 | Quality Management System ISO9001 : 2000 Environmental Management System ISO14001 : 2004 Returned Restructured as M system. |
| February 2010 | Additional applications for construction permits, electrical construction and fire facility construction. |
| December 2013 | Toyama office opened. |
| February 2010 | Acquired Hanoi Plant Engineering Company Vietnam as a subsidiary. |
| March 2014 | Grouped with Kyoden Plant Construction.CO.LTD. |
| September, 2015 | Additional application for a construction permit and building construction business. |
| February, 2016 | Toyama office and Hanoi Plant Engineering closed. |
| November, 2017 | Quality management system ISO 9001 : 2015 registered. |
| October 2019 | Construction Permit, additional application for roofing, waterproofing, and thermal insulation business. |
| September 2021 | Grouped with Hikari System.CO.LTD. |