| January | 1932 | Founded as Showa Chemical Kogyosho. | ||
| January | 1944 | Changed the company name to Goni Chemical Kogyosho. | ||
| February |
1951 |
Established as a joint-stock company with the
name, Goni Chemical Industry Co.,Ltd. | ||
| August | 1956 | Began manufacturing nitro amino phenols. | ||
| June | 1983 | Expanded the multi-purpose plant at Wakayama. | ||
| January | 1985 | Constructed a reduction plant at Wakayama. | ||
| June | 1990 | Increased capital to 20 million yen. | ||
| January | 1991 | Established Fukui Works. | ||
| November | 1995 | Constructed a distillation plant at Fukui. | ||
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