| Business | Phone |
| Action Assembly Inc 726 W Angus Ave # A, Orange 92868 | (714) 288-1876 |
| Circuit Access Inc 1168 N Batavia St, Orange 92867 | (714) 639-4368 |
| Circuit Tech 1911 N Main St, Orange 92865 | (714) 685-0991 |
| Cirtech Inc 250 E Emerson Ave, Orange 92865 | (714) 921-0860 |
| Etac 990 N Enterprise St, Orange 92867 | (714) 633-3040 |
| Gomtech Electronics Inc 990 N Enterprise St # M, Orange 92867 | (714) 288-4066 |
| Industrial Spindle Repair 856 N Elm St # E, Orange 92867 | (714) 538-6956 |