| Dec. 1980 |
Nichiyu Giken Kogyo Co., Ltd was established by NOF Corporation. |
| Sep. 1982 |
By capital increase, capital become ¥ 450 million. |
| Feb. 1992 |
By capital increase, capital become ¥ 1,080 million. |
| Dec. 1995 |
Went public. By capital increase, capital become ¥ 1,478 million. |
| Nov. 1999 |
Concluded a sales agreement regarding Chemical Indicators for Sterilization with Ansell S.A. (France). |
| Nov. 2001 |
Established CACTUS Co., Ltd. (wholly-owned subsidiary) |
| Nov. 2004 |
Environmental activity program was certified to EcoAction 21 which was formulated the Ministry of Environment. |
| Dec. 2004 |
Listed on JASDAQ Securities Exchange. |
| Mar. 2005 |
Quality system was certified to the ISO 9001:2000 Quality System Standard. |
| Apr. 2007 |
Introduced a ERP system. |
| Sep. 2009 |
Concluded a mutual distributorship agreement regarding Temperature Indicators with TEMPTIME Corp. (USA). |
| Feb. 2010 |
Quality system was certified to the ISO 9001:2008 Quality System Standard. |
| Sep. 2010 |
Became a wholly owned subsidiary of NOF Corporation by exchange of shares. Delisted from JASDAQ market. |
| Apr. 2013 |
Our English corporate name was changed to NiGK Corporation. |
