| Business | Phone |
| Royale Energy Inc 7676 Hazard Ctr Dr # 1500, San Diego 92108 | (619) 881-2800 |
| Clipper Oil 2040 Harbor Island Dr, San Diego 92101 | (619) 692-9701 |
| Arthur M Culver 1150 Anchorage Ln # 304, San Diego 92106 | (619) 224-2784 |
| Fulcrum Enterprises 10509 Vista Sorrento Pkwy #301, San Diego 92121 | (858) 658-9818 |
| Venturelli-Denk 6727 Flanders Dr, San Diego 92121 | (858) 552-8295 |