| Company | City | State / Province | Country | Phone | Website |
|---|---|---|---|---|---|
| Piedmont Block Company | Concord | NC | US | (704) 636-5231 | johnsonproductsusa.com |
| Pioneer Stone / J & N Stone | Davenport | FL | US | (863) 422-7369 | pioneerstone.com |
| Precast Systems LLC | Greencastle | PA | US | (717) 267-4500 | |
| Prestige Stone Products | Dundee | OH | US | (330) 439-5318 | prestigestoneproducts.com |
| ProVia, LLC | Sugarcreek | OH | US | (330) 852-4211 | provia.com |
| Quikrete/SPEC MIX | West Bend | WI | US | (404) 634-1900 | |
| R. Ducharme, Inc. | Chicopee | MA | US | (413) 534-4516 | cmsblock.com |
| R.I. Lampus Company | Springdale | PA | US | (412) 362-3800 | lampus.com |
| R.I. Lampus Company | Cambridge Springs | PA | US | (814) 398-4607 | |
| Rainbow Concrete Industries Ltd. | Sudbury | ON | CA | (705) 566-1740 | rcil.ca |
Concrete Masonry and Hardscapes Association