- Earth Corporation
- Ivy Cosmetics Corp.
- Agro-Kanesho Co., Ltd.
- Astellas Pharma Inc.
- ISHIHARA SANGYO KAISHA, LTD.
- INOUE PERFUMERY MFG. CO.,LTD.
- Eisai Co., Ltd.
- Otsuka Pharmaceutical Co., Ltd.
- KYORIN Pharmaceutical Co., Ltd.
- KOWA
- KOKUSAN CHEMICAL Co.,Ltd.
- Shionogi & Co., Ltd.
- SUMITOMO CHEMICAL CO., Ltd.(4名)
- Soda Aromatic Co.,Ltd.
- TAISHO PHARMACEUTICAL HOLDINGS CO., LTD.
- TAKATA KORYO CO.,LTD.
- Takeda Pharmaceuticals
- Mitsubishi Tanabe Pharma Corporation
- CHUGAI PHARMACEUTICAL CO., LTD. (2名)
- Tokyo Chemical Industry Co., Ltd.(2名)
- Toray Industries, Inc.
- TOYAMA CHEMICAL CO., LTD.(2名)
- FUJIMORI KOGYO CO., LTD.
- Nissan Chemical Corp.(3名)
- NIPPOH CHEMICALS CO., LTD.
- Nippon Kayaku Co.,Ltd.
- Nippon Soda Co.,Ltd.
- Nihon Nohyaku Co., Ltd.
- MicroBiopharm Japan Co., Ltd.(2名)
- Noevir Holdings Co., Ltd.
- Fujifilm Holdings Corp.
- UNICAS PARTNERS Co., Ltd.
- Lion Corporation
- Wako Pure Chemical Industries, Ltd(2名)
- AGC