| Business | Phone |
| Abatement Service Operation 168 Millar Ave, El Cajon 92020 | (619) 579-7454 |
| Ase Contracting 1985 Friendship Dr # J, El Cajon 92020 | (619) 258-7290 |
| P W Stephens Inc 204 Greenfield Dr # D, El Cajon 92020 | (858) 270-9500 |
| P W Stevens Inc 204 Greenfield Dr, El Cajon 92020 | (619) 442-5200 |
| Olson-Parikh Advanced Sltns 1385 N Johnson Ave # 104, El Cajon 92020 | (619) 590-2700 |
| Janus Corp 1957 Friendship Dr, El Cajon 92020 | (619) 401-1725 |