| Business | Phone |
| All Star Precision 8776 Helms Ave # E, Rancho Cucamonga 91730 | (909) 944-8373 |
| American Made 8727 Utica Ave, Rancho Cucamonga 91730 | (909) 484-0466 |
| Andsco 10722 Arrow Hwy # 720, Rancho Cucamonga 91730 | (909) 476-1105 |
| B & H Machine 8444 Rochester Ave, Rancho Cucamonga 91730 | (909) 989-2103 |
| Cutting Edge Industries Inc 8752 Industrial Ln, Rancho Cucamonga 91730 | (909) 948-1496 |
| Eddie Machine Co 11479 6th St, Rancho Cucamonga 91730 | (909) 476-7610 |
| High Point Design 9500 7th St, Rancho Cucamonga 91730 | (909) 987-2555 |
| Inspirnetics 9390 7th St, Rancho Cucamonga 91730 | (909) 941-2004 |
| J C Precision Machine 8576 Red Oak Ave, Rancho Cucamonga 91730 | (909) 484-9040 |
| Jamar-Cnc 10611 Fulton Ct, Rancho Cucamonga 91730 | (909) 980-8009 |
| Kensco 10661 Pullman Ct, Rancho Cucamonga 91730 | (909) 941-7772 |
| Metallic Engineering 10722 Arrow Hwy # 106, Rancho Cucamonga 91730 | (909) 484-7624 |
| Metro Grinding & Thread Rllng 9360 7th St # G, Rancho Cucamonga 91730 | (909) 391-2009 |
| Multipart 8758 Helms Ave, Rancho Cucamonga 91730 | (909) 481-4151 |
| Charles Loose Precision Mach 8429 White Oak Ave, Rancho Cucamonga 91730 | (909) 476-0013 |
| Empire Welding & Fabrication 9155 Archibald Ave, Rancho Cucamonga 91730 | (909) 484-3948 |
| Garcia Molds & Engineering 10641 Pullman Ct, Rancho Cucamonga 91730 | (909) 989-4478 |
| M & J Precision Technologies 10671 Civic Center Dr, Rancho Cucamonga 91730 | (909) 989-6376 |
| Paramount Machine Co 10824 Edison Ct, Rancho Cucamonga 91730 | (909) 484-3600 |
| Precision Specialties Co 8754 Lion St, Rancho Cucamonga 91730 | (909) 481-7872 |
| Production Engineering 8575 Red Oak Ave, Rancho Cucamonga 91730 | (909) 944-7762 |
| R & Dee Engineering 8776 Helms Ave # D, Rancho Cucamonga 91730 | (909) 945-1520 |
| Rapid Quality Machine 9757 7th St, Rancho Cucamonga 91730 | (909) 484-5252 |
| Redline Precision 9155 Archibald Ave # 909, Rancho Cucamonga 91730 | (909) 483-1273 |
| Ricno Technologies 10096 6th St # H, Rancho Cucamonga 91730 | (909) 980-4434 |
| Rlm Enterprise 10088 6th St # D, Rancho Cucamonga 91730 | (909) 989-4048 |
| T B Enterprises 10013 8th St # M, Rancho Cucamonga 91730 | (909) 941-8042 |
| Telian Machining Inc 9320 7th St # C, Rancho Cucamonga 91730 | (909) 944-2720 |
| Tempus Machining 10088 6th St # A, Rancho Cucamonga 91730 | (909) 484-8682 |