History
| 1979 | Established as a specialized manufacturer of plastic composite materials for the first time in Japan with the same amount of investment as Idemitsu Petrochemical Co., Ltd. and Lion Corporation. (company name: CALP CORPORATION) |
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| 1982 | Established the Composite Materials Research Laboratory. Established the research structure that can respond to the expectations of the new materials. The Laboratory created a lot of new materials, and the company built up its footing as the leading manufacturer of composite materials both in name and reality. |
| 1987 | Established a local corporation in Singapore. |
| 1990 | Established a local corporation in Hong Kong. |
| 2000 | Acquired ISO 9001 certification. |
| 2003 | Acquired ISO 14001 certification. |
| 2004 | Changed the capital structure to Idemitsu Kosan Co., Ltd. 50% and Lion Corporation 50% as a result of the incorporation of Idemitsu Kosan and Idemitsu Petrochemical Co., Ltd. The capital increased to 100 million yen. |
| 2010 | Relocated the Head Office. Changed the company name (CALP CORPORATION to Lion Idemitsu Composites Co., Ltd. Relocated the Osaka Sales Office. |
| 2011 | Opened the Shanghai Resident Office. |
| 2011 | Established a local corporation in India (December). |
| 2013 | Established a local corporation in Thailand (October). |
| 2017 | Relocated the Head Office and the Tokyo Sales Office. |
| 2021 | Changed the capital structure to Idemitsu Kosan Co.,Ltd. 100% (April). Changed the company name from “LION IDEMITSU COMPOSITES CO., LTD.” to “IDEMITSU FINE COMPOSITES CO.,LTD.(July)” |