| ACE TRADING CO., LTD. | Meggle Japan Co., Ltd |
| Alfresa Pharma Corporation | Meiwa Corporation |
| AR BROWN CO., LTD. | Merck Ltd. |
| Arysta Health & Nutrition Science Corporation | MIK PHARM CO., LTD |
| Ashland Japan Ltd. | Miki & Co., Ltd. |
| Aurobindo Pharma Japan K.K. | Mitsubishi Chemical Corporation |
| BASF Japan Ltd. | Mitsui & Co., Ltd. |
| Biobridge K.K. | Miwa Company Ltd. |
| C.B.C Co., Ltd. | Miyako Kagaku Co., Ltd. |
| Chemix Inc. | Miyuki Yakugyo Co., Ltd. |
| Chori Co., Ltd. | MP GOKYO FOOD & CHEMICAL Co., Ltd |
| Chukan Butsu Ltd. | MUROMACHI CHEMICALS INC. |
| COSTECH Pharma Inc. | Nabelin Co., Ltd |
| Daesang Japan Inc. | NAGASE & CO., LTD. |
| DKSH Japan K.K. | Namiki Shoji Co., Ltd. |
| DFE Pharma K.K | Nichibai Trading Co., Ltd. |
| ESTCHEM CO., LTD. | Nippon Axellia Co., Ltd. |
| EUROAPI JAPAN G.K. | Nippon Bulk Yakuhin Co., Ltd. |
| Evonik Japan Co., Ltd. | NIPPON SOLVAY K.K. |
| Forsitech inc. | Nisso Shoji Co., Ltd. |
| Fuji Chemicals Ltd. | PQE Japan |
| Fujikawa & Co., Ltd. | PRODUCTS ESZE CORP. |
| HighChem Company Limited | Pyxchemi K.K. |
| HIGUCHI INC. | RETTENMAIER JAPAN CO., Ltd. |
| Hovione Limited | Riverson & Co., Ltd. |
| Ichimaru Co., Ltd. | Riverstone & Co., Ltd. |
| Inagaki Yakuhin Co., Ltd. | Roquette Japan K.K. |
| Indena Japan Co., Ltd. | S.Kato&Co. |
| Itochu Chemical Frontier Co., Ltd. | Sagamichemical Industry Co., Ltd. |
| Iwase Cosfa Co., Ltd. | SANCT Corporation |
| Japan Sopharchim Co., Ltd. | Seiko Trading Co., Ltd. |
| Japanchem Incorporated | Shigematu & Co., Ltd. |
| KADERA YAKUHIN LTD. | Shima Trading Co., Ltd. |
| KANEDA CO., LTD. | Shin Nippon Yakugyo Co., Ltd. |
| Kanematsu Chemicals Corporation | Shiono Chemical Co., Ltd. |
| Kawazu Sangyo Co., Ltd. | Sogo Trading Co., LTD. |
| Kenko Corporation | SPERANEXUS, Inc. |
| Kimura Sangyo Co., Ltd. | Summit Pharmaceuticals International Corporation |
| KISCO LTD. | Symrise K.K. |
| Koa Shoji Co., Ltd. | Tohri & Company Ltd. |
| Kongo Yakuhin Co., Ltd. | TOSCO CO., LTD. |
| KONISHIYASU CO., LTD | Usino Company Limited |
| Koyo Mercantile Co., Ltd. | Watahan Trading Co., Ltd. |
| KYOWA PHARMA CHEMICAL CO., LTD. | Watanabe Chemical Co., Ltd. |
| Marubeni Chemix Corporation | Yamaguchi Yakuhin Shokai Ltd. |
| Maruzen Chemicals Co., Ltd. | Yamakawa & Co., Ltd. |
| Matsumoto Trading Co., Ltd. | YUKI GOSEI KOGYO CO., LTD. |
| MDL CHEMIPHARM CO., LTD | （95member companies） |
