| 1960 March |
Establishment of NPU (Head office: Marunouchi, Chiyoda-ku, Tokyo) for the purpose of producing polyurethane for the Japanese market. |
|---|---|
| 1962 October |
 Inauguration of the Nanyo factory; started production of TDI and polyesters. |
| 1965 February |
Osaka Sales Office opened (current Osaka Branch). |
| 1966 November |
Nagoya Sales Office opened (current Nagoya Branch). |
| 1967 April |
Head Office moved to Toranomon, Minato-ku, Tokyo. |
| 1970 September |
 ICI becomes an NPU shareholder. |
| 1972 September |
Central Research Laboratory moved to the current location in Yokohama. |
| 1977 June |
Inauguration of the "5M" MDI plant. |
| 1978 August |
 MDI technical license agreement concluded with People's Republic of China. |
| 1979 October |
Inauguration of the HDI plant. |
| 1980 June |
Establishment of Nanyo Chemical Co., Ltd. |
| 1991 March |
Inauguration of the "7M" MDI plant. |
| 1992 April |
Establishment of Nippoly America Corp. (NAC). |
| 1994 April |
Shanghai Office opened. |
| 1996 January |
 Obtained ISO 9001 certification. |
| 1996 April |
Joined the Japan Responsible Care Council (JRCC). |
| 1997 February |
Singapore Office opened. |
| 2001 January |
Obtained ISO 14001 certification for the Nanyo factory. |
| 2001 March |
Alternation of shareholders (Hodogaya Chemical Co., Ltd & TOSOH Corporation). |
| 2001 November |
Head Office moved to the current location (Shiba, Minato-ku, Tokyo). | 2002 February |
Establishment of Shanghai R&D center(Nippon Polyurethane R&D(Shanghai) Co.,Ltd.) . | 2003 Jun |
Establishment of Nippon Polyurethane (Shanghai) Co., Ltd | 2004 September |
Singapore Branch Office opened. | 2005 November |
Establishment of Nippon Polyurethane (Ruian) Co., Ltd. | 2006 April |
Alternation of shareholders (TOSOH Corporation & Hodogaya Chemical Co., Ltd.) |
| 2006 June |
Paid-in capital increased to ¥11.5 billion. | 2007 November |
Inauguration of "8M" MDI plant. | 2008 March |
Integration of Nippon Polyurethane (Shanghai) Co., Ltd. with Nippon Polyurethane R&D (Shanghai) Co., Ltd. |
