| Name | Type | Sector | Country | Joined On |
|---|---|---|---|---|
| Nissan Chemical Industries, Ltd. | Company | Chemicals | Japan | 2018-04-19 |
| Dainichiseika Color & Chemicals Mfg. Co., Ltd. | Company | Chemicals | Japan | 2018-04-10 |
| KOSE Corporation | Company | Chemicals | Japan | 2017-07-23 |
| Takasago International Corporation | Company | Chemicals | Japan | 2017-06-30 |
| Pola Orbis Holdings Inc. | Company | Chemicals | Japan | 2017-02-09 |
| Encore Ann Co., Ltd. | Small or Medium-sized Enterprise | Chemicals | Japan | 2015-09-24 |
| Kaneka Corporation | Company | Chemicals | Japan | 2015-03-18 |
| FANCL Corporation | Company | Chemicals | Japan | 2013-04-08 |
| Teijin Limited | Company | Chemicals | Japan | 2011-03-01 |
| DIC Corporation | Company | Chemicals | Japan | 2010-12-17 |
| Shin-Etsu Chemical Co., Ltd. | Company | Chemicals | Japan | 2010-11-11 |
| Saraya Co., Ltd. | Company | Chemicals | Japan | 2009-06-24 |