- Ichikawa Kankyo Engineering Co., Ltd. Gyotoku Plant
- JFE Steel Co., Ltd. East Japan Iron Works (Chiba Region)
- Tokyo Gas Co., Ltd., Sodegaura Plant, LNG Plaza
- Kazusa DNA Research Institute
- Nippon Otis Elevator Company
- Kikkoman Monoshiri Shoyu (All there is to Know about Shoyu)
- Tokyo Electric Power Co., Ltd. East Japan Thermal Power Plant (TEPCO),Chiba Thermal Power Generating Plant
- Tokyo Electric Power Co., Ltd. East Japan Thermal Power Plant (TEPCO),Goi Thermal Power Generating Plant
- Tokyo Electric Power Co., Ltd. East Japan Thermal Power Plant (TEPCO),Anesaki Thermal Power Generating Plant
- Tokyo Electric Power Co., Ltd. East Japan Thermal Power Plant (TEPCO),Sodegaura Thermal Power Generating Plant
- Tokyo Electric Power Co., Ltd. East Japan Thermal Power Plant (TEPCO),Futtsu Thermal Power Generating Plant
- Ichihara Eco-Cement Co., Ltd.
- Incorporated Administrative Agency National Institute of Technology and Evaluation (NITE) Biotechnology Headquarters
- Yamasa Shoyu Co., Ltd., Choshi Plant
- Shiroi Nashi (Pear) Brandy Co., Ltd.
- Nihon Milk Community Co., Ltd., Noda Plant
- Wakura Shuzo Co., Ltd., Sadamoto Kura
- Tokun Shuzo Co., Ltd.
- Astronautics Research and Development Organization Katsuura Tracking and Communication Station
- Ishii Shokuhin Co., Ltd. Yachiyo Factory
- Chiba Shin-Minato Clean Energy Center
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