| 2020 | Invited to participate Institutional Investors Conference by Jih Sun Securities Co.,Ltd. on December 23, 2020. | 查看文件檔 | -- |
| 2020 | 2020 Institutional Investors Conference | 查看文件檔 | |
| 2019 | 2019 Institutional Investors Conference | 查看文件檔 | |
| 2018 | 2018 Institutional Investors Conference | 查看文件檔 | |
| 2017 | 2017 Institutional Investors Conference | 查看文件檔 | |
| 2016 | The brief of TWSE 2016 chemical industry thematic presentation ceremony on August 25, 2016 | 查看文件檔 | -- |
| 2016 | 2016 Institutional Investors Conference | 查看文件檔 | |
| 2016 | The dispatch of institutional investor conference for 2016. | 查看文件檔 | -- |
| 2015 | No holding institutional investor conference. | -- | -- |
| 2014 | No holding institutional investor conference. | -- | -- |
