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- Hitachi Elevator (China) Co., Ltd.
- Hitachi Elevator (Chengdu) Co., Ltd.
- Hitachi Computer Products (America), Inc.
- Omika Works, Control System Platform Division, Social Infrastructure Systems Business Unit, Hitachi, Ltd.
- Narashino Division, Hitachi Industrial Equipment Systems Co., Ltd.
- Tsuchiura works, Machinery System Division, Industrial Products Business Unit, Hitachi, Ltd.
- Yokohama Office, Digital Systems & Services Division, Hitachi, Ltd.
- Hitachi Research Laboratory, Hitachi, Ltd.
- Hitachi IE Systems Co., Ltd.
- Design Office, Hitachi IE Systems Co., Ltd.
- Hitachi High-Tech Kyushu Corporation