| 1970. 07 |
Established as a joint venture of Daicel Corporation and Huels AG (Now, Evonik Industries AG), Germany. |
| 1988. 05 |
Aboshi Technical Center was opened. |
| 1998. 07 |
Aboshi Plant obtained certification of ISO9002 (JQA2481) |
| 1999. 02 |
Huels AG joined with Degussa AG and changed it's name as Degussa-Huels AG. |
| 2000. 05 |
Degussa Huels AG merged SKW Trostberg AG and changed it's name as Degussa AG. |
| 2000. 12 |
Aboshi Plant obtained certification of ISO14001 (JQA-EM1229) |
| 2001. 06 |
Following the name change of German parent company, Daicel-Huels Ltd. changed it's name to Daicel-Degussa Ltd. |
| 2002. 03 |
DAIAMID® coating powder was certified as "Powder Resin Coating Material for Nylon Coated Steel Pipe" of Japan Water Works Association (JWWA). |
| 2002. 07 |
One line of compound production was fully renewed to enhance it's production. |
| 2002. 07 |
C8 & C12 Monomer business was transferred from Degussa Japan. |
| 2003. 02 |
ISO9002 was renewed to ISO9001. |
| 2003. 03 |
Certified as "Green Partner" of Sony Corporation passing their Evaluation Standard for Environment and Quality Assurance System. |
| 2003. 12 |
Degussa AG transferred share to their subsidiary, Degussa Japan Co., Ltd. Accordingly Daicel-Degussa Ltd. became a joint venture of Daicel Chemical Industries 50%, Degussa Japan 50% |
| 2006. 01 |
PMMA molding compound business was transferred from Degussa Japan. |
| 2007. 04 |
04 PEEK business launched in Japan. |
| 2007. 09 |
Degussa GmbH changed it's name to Evonik Degussa GmbH |
| 2008. 01 |
Daicel-Degussa changed it's name to Daicel-Evonik Ltd. following the name change of Evonik Degussa GmbH. |
| 2010. 01 |
Films & Foams business was transferred from Evonik Degussa Japan. |
| 2021. 12 |
Daicel Corporation has transferred shares of Polyplastics-Evonik Corporation to Polyplastics Co., Ltd. |
| 2022. 04 |
Daicel-Evonik changed it's name to Polyplastics-Evonik Corporation |
