| # | Name | Location | Applications |
|---|---|---|---|
| 1. | W. SILVER INC. | 🇺🇸 Vinton, TX, United States | 4 |
| 2. | WSI Corporation | 🇺🇸 Andover, MA, United States | 19 |
| 3. | WSI Corporation | 🇺🇸 Billerica, MA, United States | 4 |
| 4. | WSI INTERNATIONAL LLC | 🇺🇸 Centennial, CO, United States | 2 |