Koei Chemical Co., Ltd. began production of acetic acid for the medical industry in 1917. 100 years have elapsed since that time.
We draw on the wealth of R&D expertise we have developed as a company to provide nitrogen-containing compounds for various needs.
Founded as Koei Pharmaceutical Co., Ltd. in Osaka and started to produce acetic acid.
Started to produce formalin.
Changed the company name to
Koei Chemical Co., Ltd.
Started to produce pentaerythritol.
Started to produce amines.
Started to produce pyridine bases.
Expanded the fine chemical facility for Amines.
"Okochi Memorial Production Prize" for the production of pyridine bases
Started to produce formalin, trimethylolpropane, sodium hydrosulfite, amines and pyridine bases in Chiba Plant.
Started to produce chemical body warmers.
Started to produce 2-cyanopyrazine.
Construction of a multi-purpose vapor-phase plant in Chiba Plant.
Listed on the 2nd Section of the Osaka Securities Exchange.
Expanded the liquid-phase reaction plant in Chiba Plant.
Expanded the vapor-phase reaction plant in Chiba Plant.
Opened a new laboratory in Chiba Plant and production and research functions centralized to Chiba Plant.
Relocated Tokyo Head Office to the present address.
Closedown of Osaka Plant.
Changed the registered address to Sodegaura-shi,Chiba
Celebration the 100th anniversary.
Expanded the liquid-phase reaction plant.
Built the general office building in Chiba Plant.