| Business | Phone |
| Dal Assoc Inc 13050 Loma Rica Dr, Grass Valley 95945 | (530) 477-5267 |
| Daytech Corp 13605 Lost Lake Rd, Grass Valley 95945 | (530) 274-2550 |
| Electrum Grass Valley 95945 | (530) 273-1725 |
| Sierra Nevada Software Dev 10097 Jay Jay Pl, Grass Valley 95949 | (530) 272-5455 |
| Trilogy Design 200 Litton Dr # 330, Grass Valley 95945 | (530) 273-1985 |