| 1946 |
Nikuni Co., Ltd., was founded and start manufacturing pumps and optical instrument |
| 1949 |
Established Yamagata Factory. |
| 1973 |
Established Asahi Nikuni Factory. |
| 1973 |
Nominated as standard factory by Governor of Kanagawa Prefecture |
| 1984 |
Facilities of Yamagata Factory was innovated and entered into semi-conductor manufacturing field. |
| 1989 |
Started manufacturing various environmental control equipment |
| 1990 |
Obtain the award of the Director of Middle Size Industrial Agency |
| 1991 |
Established No.2 clean room in Yamagata Factory troublesome electronic timers needed |
| 1995 |
Established Shanghai Nikuni for manufacturing pump in China |
| 1997 |
Obtained ISO 9002 by Asahi Nikuni Factory. Name changed to Nikuni co.ltd, from Nikuni Machinery Industry co. Ltd |
| 1998 |
Obtained ISO 9002 by Yamagata Factory |
| 1999 |
Obtained ISO 14001 by Head Office |
| 2000 |
Obtained ISO 14001 by Yamagata Factory |