| Company | City | State / Province | Country | Phone | Website |
|---|---|---|---|---|---|
| QUADRA USA, Inc. | Phoenix | AZ | US | (602) 373-2951 | quadra-concrete.com |
| Quatromatic Ltd | London | GB | +44 204 577 0375 | quatromatic.com | |
| QUIKRETE Cement | Alpharetta | GA | US | (678) 368-4300 | quikrete.com |
| Rampf Molds Industries, Inc. | Hagerstown | MD | US | (301) 791-6880 | rampf.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 | (888) 288-4045 | rockwoodwalls.com |
Concrete Masonry & Hardscapes Association