| 1983 |
Founded as Sales & Trading Company |
| 1994 |
Nanjing Hakko Chemical Co. established as Manufacturing Company jointed with Chineselocal firm. |
| 2000 |
Nanjing Hakko to be licensed as 100% owned Enterprise by Japanese Hakko Tsusho
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| |
Constructing and operating Kashima plant site in Japan |
| 2004 |
Changed name to Nanjing Hakko Pharma-tech Co., Ltd. |
| 2007 |
Equiped and operated exhaust-gas treatment facilities in Nanjing Hakko
|
| 2008 |
Equiped and operated waste water treatment facilities in Nanjing Hakko |
| 2009 |
MANAC Incorporated (listed in the Tokyo Stock Exchange) owned 100% stock share of Hakko Tsusho |
| 2018 |
Nanjing Hakko transferred by Nanjing Zhengyuan Group |
| 2019 |
Osaka Sales Branch closed |