| Business | Phone |
| Aaa Soundproofing Foam 175 E Houston St, New York 10002 | (212) 473-4462 |
| Accusonic Products 584 Broadway, New York 10012 | (212) 941-9732 |
| Concrete Polishing 3201 Clark Street, New York 10011 | (254) 287-0341 |
| Sick GmbH 74 Leroy Aye Street, New York 45766 | (415) 486-2371 |