| # | Name | Location | Applications |
|---|---|---|---|
| 1. | K2R Co., Ltd. | π―π΅ Kitakyushu-shi, Japan | 2 |
| 2. | K2R Co., Ltd. | π―π΅ Fukuoka, Japan | 2 |
| 3. | K2R2 | πΊπΈ Camarillo, CA, United States | 3 |
| 4. | K2R2 LLC | πΊπΈ Oceanside, CA, United States | 1 |
| 5. | K2R2 LLC | πΊπΈ Camarillo, CA, United States | 13 |