| Company | City | State / Province | Country | Phone | Website |
|---|---|---|---|---|---|
| QGM ZENITH | Quanzhou Taiwanese | Fujian | CN | 49 2735 779 200 | qzmachine.com |
| QUADRA USA, Inc. | Phoenix | AZ | US | (602) 373-2951 | quadra-concrete.com |
| Ready Mix USA, LLC - A CEMEX Company | Birmingham | AL | US | (713) 722-5826 | |
| Regency Wire & Cable | Sikeston | MO | US | (731) 234-2372 | |
| Rekers NA, Inc. | Elmsford | NY | US | (914) 347-7446 | rekers.de |
| Risi Stone Systems | Newmarket | ON | CA | (416) 930-9992 | risistone.com |
| Rockwood Retaining Walls | Rochester | MN | US | (507) 535-3512 | rockwoodwalls.com |
| Rockwood Retaining Walls | Rochester | MN | US | (507) 535-3512 | rockwoodwalls.com |
| Romex North America | Burnaby | BC | CA | (844) 529-2330 | romexhardscapes.com |
| Romex Northeast, LLC | Danbury | CT | US | (844) 529-2330 |
Concrete Masonry and Hardscapes Association