History
| Aug. 1963 | Establishment |
| Oct. 1963 | Started business at Kosuge Laboratory |
| Jun. 1964 | Admitted as the Foundation by the Minister of International Trade and Industry |
| Apr. 1966 | Started the business at Soka Laboratory (Soka City, Saitama Pref.) |
| Oct. 1967 | The name of Soka Laboratory was changed to Central Laboratory |
| Jul. 1969 | Placed under the joint supervision of Minister of International Trade and Industries and Minister of Construction |
| Apr. 1974 | Establishment of Chugoku Laboratory (Sanyo-cho, Yamaguchi Pref.) |
| Dec. 1977 | Chugoku Laboratory was specified as the fire proof material testing agency by the Ministry of Construction |
| May. 1978 |
Establishment of Edobashi Branch (Chuo-ku, Tokyo) |
| Jul. 1978 | Establishment of Mitaka Branch (Mitaka City, Tokyo) |
| Apr. 1979 | Specified by the Tokyo local government as the testing and inspection agency under the construction work standard specifications |
| Mar. 1980 | Establishment of Fukuoka Branch (Shimen-machi, Fukuoka Pref.) |
| Apr. 1981 | Authorized as the official inspection agency for the inspections made under the public notice |
| Jun. 1986 | Registered as Class 1 Architect of Head office secretariat |
| Apr. 1987 | Establishment of Shikoku Service Center (Takamatsu City, Kagawa Pref.) |
| Oct. 1988 | Central Laboratory was registered as the working environment (dust) inspection agency of the Ministry of Labor |
| Oct. 1991 | Establishment of Urawa Branch (Urawa City, Saitama Pref.) |
| Jul. 1993 | Establishment of Yokohama Branch (Yokohama City, Kanagawa Pref.) |
| Nov. 1993 | Started the quality system certification and registration services |
| Nov. 1995 | Closed Edobashi Branch, and opened Ryogoku Branch(Sumida-ku, Tokyo) |
| Nov. 1995 | Registered as Class 1 Architect of Central Test Laboratory |
| Dec. 1995 | Specified by The Japan Accreditation Board for Conformity Assessment as the Quality Management system Registration Body |
| May. 1996 | The Head Office Secretariat moved into a new office (Nihonbashi-kayabacho, Chuo-ku, Tokyo) |
| Oct. 1996 | Started the environmental management system certification and registration services |
| Oct. 1996 |
Establishment of Syunan Branch (Tokusima City, Yamaguchi Pref.) |
| Apr. 1998 |
Opened Funabashi Branch (Funabashi City, Chiba Pref.) |
| Oct. 1998 | Specified by The Japan Accreditation Board for Conformity Assessment as the Environment Management system Registration Body |
| Sep. 1999 |
Establishment of Kansai Cetification Branch (Osaka City, Osaka) |
| Apr. 2000 |
The Headquarter to Performance Evaluation was opened (Nihonbashi-kayabacho, Chuo-ku, Tokyo) |
| Jun. 2000 | Designated as Performance Evaluation Body and Type Approval Body under Building Standard Law |
| Jun. 2000 | Started the Occupational Health and Safety management system certification and registration services |
| Oct. 2000 | Designated as Testing Laboratory and Housing Type Approval Body |
| Jul. 2003 | The name of Chugoku Test Laboratory was changed to Nishinihon Test Laboratory |
| Jul. 2003 | Establishment of Fukuoka Certification Branch (Fukuoka City, Fukuoka Pref.) |
| Jul. 2004 | Standardization Division was opened (Nihonbashi-kayabacho, Chuo-ku, Tokyo) |
| Oct. 2005 | Specified as an accredited certification body by Ministry of Economy, Trade and Industry under the new JIS Mark Scheme |
| Jun. 2006 | Products Certification Division was opened (Nihonbashi-kayabacho, Chuo-ku, Tokyo) |
| Nov. 2008 | The Secretariat moved into a new office (Soka City, Saitama Pref.) |
| Apr. 2009 | Establishment of Construction Materials Test Laboratory |