| # | Name | Location | Applications |
|---|---|---|---|
| 1. | PK Clean Energy Pte Ltd | 🇸🇬 Singapore, Singapore | 1 |
| 2. | PK Clean Technologies | 🇺🇸 Salt Lake City, UT, United States | 1 |
| 3. | PK Clean Technologies Inc. | 🇺🇸 Salt Lake City, UT, United States | 2 |
| 4. | PK Companies Group, LLC | 🇺🇸 Wichita, KS, United States | 1 |
| 5. | PKC Electronics Oy | 🇫🇮 Raahe, Finland | 1 |
| 6. | PKC SEGU SYSTEMELEKTRIK GMBH | 🇩🇪 Barchfeld, Germany | 1 |
| 7. | PKC Wiring Systems Oy | 🇫🇮 Kempele, Finland | 1 |