- April 1994
Merged five former construction companies*
to establish NS Engineering Corporation * Nippon Sanso Techno Service, Nippon Sanso
Construction Tohoku, Nippon Sanso
Construction Keihin, Nippon Sanso
Construction Meihan, Nippon Sanso
Construction West Japan
- June 1994
Integrated the engineering division of
Nippon Sanso
- April 1999
Aizu Factory (currently Aizu Equipment
Manufacturing) obtained ISO 9001 (1994
version) certification
- July 1999
Received designation as a designated safety
inspection organization regarding general
high-pressure gas regulations (nationwide)
from the Minister of International Trade and
Industry
- June 2000
Expanded the designated categories to
include the Safety Regulations for Complexes
(regional) from the Minister of
International Trade and Industry
- April 2001
Expanded the designated categories to
include the Liquefied Petroleum Gas Safety
Regulations (nationwide) from the Minister
of Economy, Trade and Industry
- October 2001
Obtained ISO 9001 certification (excluding
Aizu Factory, currently Aizu Equipment
Manufacturing)
- March 2002
Received designation as a designated
completion inspection body for general
high-pressure gas regulations (nationwide)
from the Minister of Economy, Trade and
Industry
- June 2002
Obtained OHSAS 18001 certification
- October 2003
Integrated ISO 9001 company-wide and
transitioned to the 2000 version
- April 2006
Integrated Saan Technology Services
- July 2008
Obtained ISO 14001 certification
- July 2008
Changed the company name to Taiyo Nippon Sanso Engineering Corporation
- July 2008
Integrated the semiconductor-related
business division of Saan Engineering
- January 2021
Obtained ISO 45001 certification
(transitioned from OHSAS 18001)
- April 2026
Changed the company name to Nippon Sanso
Engineering Corporation
