| Business | Phone |
| Coastal Frontiers Corp 9420 Topanga Canyon Blvd # 101, Chatsworth 91311 | (818) 341-8133 |
| Embedded Technology Assoc 21405 Devonshire St # 201, Chatsworth 91311 | (818) 998-8453 |
| Structural Integrity Engnrng 9525 Vassar Ave, Chatsworth 91311 | (818) 718-2195 |
| Titan Research & Technology 9410 Topanga Canyon Blvd # 104, Chatsworth 91311 | (818) 709-3705 |
| Anila Environmental 10107 Hanna Ave, Chatsworth 91311 | (818) 772-9600 |
| Cbw Inc 20450 Plummer St, Chatsworth 91311 | (818) 407-3994 |
| Tqm Engineering Inc 11501 Poema Pl # 201, Chatsworth 91311 | (818) 880-8010 |