| Business | Phone |
| Auger Doninni & Nguyen Inc 1441 Boul Rene-Levesque O, Montreal H3G 1T7 | (514) 935-1798 |
| Nettoyeurs Provincial Conduits 8246 Rue Alfred-Brosseau, Montreal H1E 2Y4 | (514) 648-0286 |
| Npv 1300 Boul Rosemont, Montreal H2G 1S1 | (514) 276-6464 |
| Biovac Systeme 8751 8e Av, Montreal H1Z 4G5 | (514) 990-9605 |
| Ventilaction 2000 12645 27e Ave, Montreal H1E 2A3 | (514) 494-8703 |
| G Morrisette Ventilation 629 Av Haig, Montreal H1N 3C9 | (514) 255-4774 |