| Business | Phone |
| Appel & Cie Inc 69 Rang Saint-Pierre N, Saint-Constant J5A 2E7 | (450) 638-6949 |
| Groupe Serpone 191 Rue Saint-Pierre, Saint-Constant J5A 2G9 | (450) 638-0682 |
| Druker & Assoc Inc 171 Rue Saint-Pierre #201, Saint-Constant J5A 2G9 | (450) 638-2433 |