| Business | Phone |
| Fike Rupture Discs Co 4917 Lankershim Blvd, North Hollywood 91601 | (323) 877-0611 |
| Norman Auerbach & Assoc 4932 Lankershim Blvd # 204, North Hollywood 91601 | (818) 505-0028 |
| Auerbach & Assoc 4932 Lankershim Blvd # 204, North Hollywood 91601 | (818) 505-0028 |
| Phillips & Assoc North Hollywood 91601 | (818) 509-5865 |