| Business | Phone |
| Mrc Precision Engineering 8622 Svl Box, Victorville 92395 | (760) 949-2224 |
| North American Engineering 13628 Cobra St, Victorville 92394 | (760) 530-1300 |
| Product System Engineering 18498 Finance St, Victorville 92394 | (760) 246-7000 |
| Thunder Works Engine Machine 15346 Bonanza Rd, Victorville 92392 | (760) 241-4500 |