TOAGOSEI Co., Ltd.
- Head Office
- Osaka Branch
- Nagoya Branch
- Hokuriku Sales Office
- Shikoku Sales Office
- Fukuoka Sales Office
- Nagoya Plant
- Tokushima Plant
- Takaoka Plant
- Sakaide Plant
- Nagoya Research & Development
- Institute for Advanced Sciences
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  Principal Subsidiaries and Affiliates
- Aron Kasei Co., Ltd.
- Tsurumi Soda Co., Ltd.
- Nihon Junyaku Co., Ltd.
- Aron Ever-Grip Ltd.
- MT AquaPolymer,Inc.
- Oita Chemical Co., Ltd.
- Toa Techno-Gas Co., Ltd.
- TG Corporation
- TOA Engineering Co., Ltd.
- Toa Business Associe Co.,Ltd
- Toa Kogyo Co., Ltd.
- Toa Logistics Co., Ltd.
- Aron Packaging Co., Ltd.
- Toa Kenso Co., Ltd.
- Toyo Denka Kogyo Co., Ltd.
- Mikuni Plastics Co., Ltd.
  Group worldwide
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