| Business | Phone |
| Polypros Inc 2131 March Rd, Roseville 95747 | (916) 786-7000 |
| Si Tek Process Solutions 8557 Washington Blvd, Roseville 95678 | (916) 797-9000 |
| Advent Systems Roseville 95661 | (916) 791-7286 |
| Antares Industries Inc Roseville 95661 | (916) 773-2979 |
| Cottonwood Inc 9984 Niblick Dr, Roseville 95678 | (916) 788-9636 |
| Semi One Inc 3136 Big Bear Dr, Roseville 95747 | (916) 408-2635 |
| California Manufacturing Tech 151 N Sunrise Ave, Roseville 95661 | (916) 772-1006 |
| Crouse Hinds Cooper Industries 101 Bass Ct, Roseville 95661 | (916) 784-1004 |