| Business | Phone |
| Emulsions Control Inc 925 Hale Pl # A7, Chula Vista 91914 | (619) 656-8899 |
| Environmental Intl Svc 1473 Caminito Capistrano, Chula Vista 91913 | (619) 397-5806 |
| Alisto Engineering Group Inc 880 Canarios Ct, Chula Vista 91910 | (619) 656-2980 |
| Kem 101 N Glover Ave # B, Chula Vista 91910 | (619) 409-9292 |