| Business | Phone |
| Ascent Service & Technology 75 Wall St # C, New York 10005 | (212) 363-1654 |
| Boca Group Intl 200 Park Ave # 50, New York 10166 | (212) 983-7010 |
| Elevator Cab Consultants 1112 Park Ave, New York 10128 | (212) 502-6632 |
| Jenkins & Huntington Ny Inc 1251 Avenue Of The Americas, New York 10020 | (212) 221-4224 |
| Landmark Elevator Consultants 1776 Broadway, New York 10019 | (212) 956-0138 |
| United Elevator Consultants 2 Penn Plz # 1915, New York 10121 | (212) 594-6060 |
| Walsh Associates Ltd 111 John St # 1420, New York 10038 | (212) 393-1333 |
| Vertical Systems Analysis Inc. 307 West 36 Street, 8 Floor, New York 10018 | (212) 989-5525 |