| 1904 |
The founder Riichiro Kataoka established Kyoeisha Sekken Seizosho(a soap making factory) in Hirota-cho(Imamiya-Hirota-cho), Naniwa-ku, Osaka city. |
| 1911 |
The plant and office was relocated to Gamou-cho, Joto-ku, Osaka City. |
| 1932 |
The company was incorporated to a joint-stock corporation with a capital of 100 thousand yen. |
| 1933 |
An offce was opened in Tokyo(currently the Tokyo Branch) and Nagoya(currently the Nagoya Office). |
| 1942 |
The name of company was changed to Kyoeisha Yushi Kagaku Kogyo Co.,Ltd. |
| 1950 |
An Office was opened in Kokura(currently the Fukuoka office). |
| 1953 |
The Kanazawa Office was opened. |
| 1962 |
Modernization work at the Head Office plant was completed. Construc-tion was Completed on the Technology Research Laboratories. The Synthetic Detergent Workshop was construcred at the Joto Plant and started operation. |
| 1966 |
A plant construction site was purchased in the SAIKUJO Industrial Area, Nara City. A Lubricant Workshop was constructed at the Joto Plant and started operation. |
| 1969 |
The Head Office was relocated to Tanimachi, Minami-ku Osaka City. |
| 1971 |
As a result of move of relocating the plant to Nara, the plant at the Head Office was closed. The Research Laboratories was constructed in the Nara Plant. |
| 1989 |
A Delivery Center was constructed in Higashi Osaka. An on-line system for the entire company was completed. A new office building was constructed in the Nara Plant. |
| 1990 |
The Joto Plant was closed. |
| 1992 |
The company was renamed Kyoeisha Chemical Co., Ltd. |
| 1993 |
The Kanazawa Office was closed. |
| 1994 |
The Tokyo Branch was moved to its present location for business expansion. |
| 1996 |
The Head Office was relocated to Minamihonmachi Chuo-ku, Osaka City. |
| 1998 |
ISO9001 certification acquisition. |
| 2000 |
A delivery center was constructed at the Nara Factory. |
| 2004 |
The new Research Laboratories was constructed in the Nara Plant. ISO14001 certification acquisition. |
| 2005 |
An Office was opened in Shanghai. |
| 2007 |
The Nagoya Office was moved to its present location. |
| 2009 |
The Taiwan Plant and Shiga Plant was constructed and started operation. |
| 2010 |
Incorporate the Shanghai local staff office as a local subsidiary office |
| 2014 |
The Delivery Center was moved to Tenri-city in Nara. |
| 2016 |
Closed local subsidiary Kyoei Chemical (Shanghai) Co., Ltd. |
| 2017 |
Upgraded the Tokyo office to the Tokyo branch. |
