| Business | Phone |
| Mission Research Corp 3625 Del Amo Blvd # 260, Torrance 90503 | (310) 793-1636 |
| Misson Research Corp 2909 Oregon Ct # C12, Torrance 90503 | (310) 328-9768 |
| Sequoia Research Corp 23824 Hawthorne Blvd # 100, Torrance 90505 | (310) 378-8263 |
| Control Research Inc 4025 Spencer St, Torrance 90503 | (310) 370-7610 |
| Gdk Research & Investments Palos Verdes Blvd, Torrance 90503 | (323) 463-4000 |
| Laser Research 4101 Torrance Blvd, Torrance 90503 | (310) 540-5273 |
| Lieberman Research Assoc 19815 Mildred Ave, Torrance 90503 | (310) 371-2198 |
| Mission Research Corp Res Con 3625 Del Amo Blvd, Torrance 90503 | (310) 698-4120 |
| Avi Research Inc 3250 Lomita Blvd, Torrance 90505 | (310) 891-1383 |
| Natural Hazards Management Inc 5402 Via Del Valle, Torrance 90505 | (310) 791-0043 |
| Tiger Century Aircraft 24050 Madison St # 209, Torrance 90505 | (661) 618-9415 |
| Toyo Research 22760 Hawthorne Blvd # 202, Torrance 90505 | (310) 378-1491 |