| September 1953 |
Founded Chugai Isen Kogyo Co., Ltd. in Yokokawa-Shinmachi, Hiroshima City, and began repairing, modifying and selling industrial and medical radiation equipment. |
| October 1962 |
Non-destructive Inspection Industry Co., Ltd. is established in Gion-cho, Hiroshima City, and launched as an independent affiliated company. |
| 1964 |
Started repair and maintenance services for industrial X-ray equipment |
| February 1965 |
Established the Gion Factory in Gion Nishihara, Hiroshima and started home appliance service business. |
| July 1968 |
Opened the Nishi-Tokyo Sales Office in Fuchu, Tokyo, and started maintenance management services related to instrumentation in general. |
| 1969 |
Started industrial computer installation and maintenance, non-destructive inspection, distortion measurement and analysis, and material investigation and testing. |
| July 1970 |
Established a new factory in Nishihara, Gion-cho, Hiroshima City, and began operations related to pollution prevention regulations, such as dust measurement and water quality analysis, as a pollution inspection office. |
| August 1973 |
Head office building completed, integrating Yokokawa Factory, Higashi Sales Office, and Pollution Inspection Sales Office |
| 1975 |
Measurement certification business registration at head office (first for our company) |
| 1975 |
Beginning with on-site measurements of dust collectors, R&D support work begins |
| June 1976 |
Established Kanto Sales Office in Chiba City and started general pollution inspection and maintenance management of telemeters, automatic measuring devices, etc. |
| 1978 |
Separated from non-destructive Inspection Industry Co., Ltd. and established Tokki Kogyo Testing Co., Ltd. |
| 1978 |
Started selling office automation equipment and computer system equipment |
| 1980 |
Plant commissioning begins |
| 1981 |
Tokki Kogyo Kensetsu Co., Ltd. Keiyo Sales Office opened. |
| 1981 |
Started measuring instrument maintenance service |
| October 1982 |
Osaka branch opened (the predecessor to the current Kansai branch) |
| November 1983 |
The chemical, electronics, electrical and special machinery divisions of Chugai Medical Wire Industries Co., Ltd. are separated to establish Chugai Technos Co., Ltd. |
| November 1983 |
Started business of environmental survey, measurement, various chemical analysis, instrumentation system design, information, measurement, and electrical equipment sales. |
| June 1984 |
Tokyo branch office opened |
| October 1985 |
Merged Tokki Kogyo Shiken Co., Ltd. and launched as the Tokki Testing Division of Chugai Technos Co., Ltd. |
| December 1986 |
Chubu Branch opened (the predecessor to the current Chubu Branch Office). |
| 1986 |
Registered as a construction consultant and began environmental consulting services |
| 1987 |
Established a first-class architectural firm |
| 1988 |
Started measuring and analyzing dioxins |
| 1990 |
Started CAE (Computer Aided Engineering) business |
| November 1992 |
Industrial Technology Center completed |
| September 1994 |
Started waste management consulting business |
| September 1995 |
Kanto Environmental Technology Center completed, integrating Kanto Sales Office and Inage Branch Office |
| 1995 |
Development of automatic laser tube thickness measuring device |
| 1995 |
Started consulting business for formulating basic environmental plans |
| March 1996 |
Kansai Environmental Technology Center completed |
| 1996 |
Developed a device to detect iron particles in slabs |
| 1996 |
Started earthquake resistance diagnosis and concrete structure investigation services. |
| 1999 |
Started designing simple plant control systems |
| Year 2000 |
Started formulating an action plan for global warming countermeasures |
| Year 2000 |
Development of a comprehensive evaluation system for automobile noise |
| 2001 |
Developed sodium bicarbonate cleaning system for inside heat exchanger tubes |
| December 2002 |
New head office building completed and relocated |
| September 2003 |
50th anniversary |
| 2003 |
Designated by the Ministry of the Environment as a soil survey agency |
| 2003 |
Registered as a specific measurement certification business operator (MLAP) |
| September 2004 |
Research and Technology Center completed |
| 2004 |
Started environmental microorganism bio business |
| July 2005 |
Electrical General Technology Center (now Electrical Control Technology Center) completed. |
| 2005 |
Asbestos analysis begins |
| 2006 |
Invented the test method for JIS standard dust collection filter cloth |
| December 2007 |
Chubu branch office completed |
| 2008 |
Entrusted with survey of the soundness of the Atomic Bomb Dome by Hiroshima City |
| January 2009 |
Radiation Medical Business Headquarters established. |
| August 2010 |
Established environmental consulting departments in Tokyo and Osaka |
| October 2010 |
Started underground radar survey work |
| November 2011 |
Opened Tohoku Sales Office in Sendai City |
| June 2011 |
Started radiation and radioactivity testing services after the Great East Japan Earthquake |
| 2012 |
Supported the development of equipment for investigating inside the PCV of Fukushima Daiichi Nuclear Power Plant Unit 1 |
| August 2013 |
Demonstration test of CO2 monitoring system for CCS begins |
| September 2013 |
60th anniversary since founding |
| April 2014 |
Established Chugai Technos Vietnam Co., Ltd. in Ho Chi Minh City, Vietnam. |
| May 2016 |
Electrical Systems Development Center completed, decommissioning support operations commenced in earnest |
| September 2017 |
Acquired a company-owned building in Higashi-Nihonbashi, Chuo-ku, Tokyo, renovated it into the CT Building, and relocated the Tokyo branch office. |
| December 2018 |
Registered the traveling high-definition image measurement system (tunnel tracer) in the New Technology Information System (NETIS) |
| March 2019 |
Developed and commercialized the remote monitoring system (CEEMS) |
| October 2019 |
Established the International Research Office to accommodate the increase in overseas business and strengthen international functions. |
| August 2020 |
Established Chugai Technos India Private Limited in Bangalore, India. |
| September 2023 |
70th anniversary since founding |
