| Name |
Location |
| Utsunomiya Engineering Center |
Tochigi Pref., Japan |
| Hino Engineering Center |
Tokyo, Japan |
| Atsugi Engineering Center |
Kanagawa Pref., Japan |
| Hamamatsu Engineering Center |
Shizuoka Pref., Japan |
| Susono Engineering Center |
Shizuoka Pref., Japan |
| Toyota Development & Engineering Center |
Aichi Pref., Japan |
| Okazaki Engineering Center |
Aichi Pref., Japan |
| Kariya Engineering Center |
Aichi Pref., Japan |
| Osaka Engineering Center |
Osaka, Japan |
| Hiroshima Engineering Center |
Hiroshima Pref., Japan |
| Kyushu Engineering Center |
Fukuoka Pref., Japan |
| AutoNetworks Technologies, Ltd. |
Mie Pref., Japan |
| SEWS Mexico S.A. de C.V. |
Aguascalientes, Mexico |
| SEI ANTech-Europe GmbH |
Mainz-Kastel, Germany |
| SUMI REMA EV Solutions GmbH |
Bonn, Germany |
| SEWS-CABIND S.p.A. |
Collegno, Italy |
| SEWS-STC Co., Ltd. |
Shanghai, China |
| Kaifeng Rijin Wiring Systems Co., Ltd. |
Henan, China |
| Sumidenso Automotive Technologies Asia Corporation |
St. Clark Freeport Zone, Philippines |
| SEWS-Asia Technical Center |
Bangkok, Thailand |
