| Business | Phone |
| Cosmotronic Co Corp 16721 Noyes Ave, Irvine 92606 | (949) 660-0740 |
| Azure Semiconductor Tech 52 Fabriano, Irvine 92620 | (714) 731-8619 |
| Lsi Logic Corp 2 Park Plz # 440, Irvine 92614 | (949) 809-4600 |
| Oac Inc 17536 Von Karman Ave, Irvine 92614 | (949) 852-1551 |