| Business | Phone |
| Concept Design Engineering 941 Washington Blvd # 306, Roseville 95678 | (916) 780-6550 |
| Swiss-Tech Machining 10628 Industrial Ave, Roseville 95678 | (916) 797-6010 |
| Gehl Machine Works 105 E St, Roseville 95678 | (916) 786-5415 |
| Good Heads Engine & Machine 325 Riverside Ave, Roseville 95678 | (916) 783-8111 |
| Metro Precision Machining Inc 941 Washington Blvd, Roseville 95678 | (916) 780-2722 |
| Rcm Enterprises 2120 March Rd # C, Roseville 95747 | (916) 773-4139 |
| Technical Machining Inc 941 Washington Blvd, Roseville 95678 | (916) 780-9494 |
| Zones Tech Inc 941 Washington Blvd, Roseville 95678 | (916) 787-1715 |