| # | Name | Location | Applications |
|---|---|---|---|
| 1. | S. J. Electro Systems, Inc. | 🇺🇸 Detroit Lakes, MN, United States | 2 |
| 2. | S.J. Electro Systems, Inc. | 🇺🇸 Detroit Lakes, MN, United States | 12 |
| 3. | S.J. Electro Systems, Inc. | 🇺🇸 Detroit Lakes, MI, United States | 1 |
| 4. | S.J. Electro Systems, LLC | 🇺🇸 Detroit Lakes, MN, United States | 1 |
| 5. | SJE CORPORATION, LTD. | 🇰🇷 Busan, South Korea | 2 |
| 6. | SJE Corporation, Ltd. | 🇰🇷 , South Korea | 1 |
| 7. | SJE-RHOMBUS | 🇺🇸 Detroit Lakes, MN, United States | 2 |
| 8. | SJE-Rhombus | 🇺🇸 Detroit Lake, MN, United States | 1 |