| SASuzio Asphalt CO Inc, L | Meriden | 1–19 | ● ACTIVE |
 Connecticut Precast Corporation | Monroe | — | ● ACTIVE |
 Cromwell Concrete Products, Incorporated | Cromwell | — | ● ACTIVE |
 F & F Concrete Corporation, the | Plantsville | — | ● ACTIVE |
| KLKenneth Lynch & Sons, Incorporated | Oxford | — | ● ACTIVE |
| UCUnited Concrete Products, INC | Yalesville | 100–499 | ● ACTIVE |
| APAdvanced Photonics International, INC. | Fairfield | — | ● ACTIVE |
 Composition Materials CO INC | Milford | — | ● ACTIVE |
 Ct Fiberoptics, INC | Somers | — | ● ACTIVE |
 Edison Coatings, INC | Plainville | — | ● ACTIVE |
 F & F Materials, LLC | Plantsville | — | ● ACTIVE |
 Five Star Products, INC. | Shelton | — | ● ACTIVE |
 Greenmaker Industries of Connecticut LLC | West Hartford | — | ● ACTIVE |
 Mono Crete Step CO of Ct LLC | Bethel | — | ● ACTIVE |
 Nano Solutions LLC | Bridgeport | — | ● ACTIVE |
 New England Metal Finishing LLC | Windsor | — | ● ACTIVE |
 United Concrete Products INC. | Wallingford | — | ● ACTIVE |
 US Barricades, LLC | Darien | — | ● ACTIVE |
| BCBuilders Concrete East | Windham | 20–99 | ◐ LIKELY ACTIVE |
| BPBlakeslee Prestress INC | Branford | 100–499 | ◐ LIKELY ACTIVE |
| CSCoreslab Structures (conn), INC | Thomaston | 20–99 | ◐ LIKELY ACTIVE |
| OGO & G Industries | Danbury | — | ◐ LIKELY ACTIVE |
| UAUnited Abrasives INC | Willimantic | — | ◐ LIKELY ACTIVE |
| BCBuilders Concrete East LLC | Manchester | — | ◇ UNVERIFIED |
| OPOldcastle Precast | Avon | — | ◇ UNVERIFIED |
| OROldcastle Retail INC (dba Bonsal American) | Canaan | — | ◇ UNVERIFIED |
| SYSuzio York Hill Concrete | New Haven | — | ◇ UNVERIFIED |
| CICoorstek, INC. | East Granby | — | ◐ LIKELY ACTIVE |
| UAUnited Abrasives INC | North Windham | 100–499 | ◐ LIKELY ACTIVE |
| ACArrow Concrete Products, INC | Milford | — | ◇ UNVERIFIED |
| BRBreault Road Fabrication & Distribution | Beacon Falls | — | ◇ UNVERIFIED |
| CSConnecticut Stone | Milford | — | ◇ UNVERIFIED |
| DBDevine Bros Heating | Norwalk | — | ◇ UNVERIFIED |
| EIElm-cap Industries, INC | West Hartford | — | ◇ UNVERIFIED |
| FRFarmington Ready Mix, INC. | Farmington | — | ◇ UNVERIFIED |
| HBHartford Ball Company | Rocky Hill | — | ◇ UNVERIFIED |
| LCL C D Lighting INC | Milford | — | ◇ UNVERIFIED |
| MCMorganite Crucible | North Haven | — | ◇ UNVERIFIED |
| NMNew Milford Block & Supply CORP. | New Milford | — | ◇ UNVERIFIED |
| NVNorwalk Vault CO | Bridgeport | — | ◇ UNVERIFIED |
| NRNorwich Ready Mix Concrete Plant Facility | Norwich | — | ◇ UNVERIFIED |
| OIO&g Industries INC Beacon Falls | Beacon Falls | — | ◇ UNVERIFIED |
| QCQuikrete - Connecticut Plant | Moosup | — | ◇ UNVERIFIED |
| RIRaymark Industries | Stratford | — | ◇ UNVERIFIED |
| SRSega Ready Mix, | New Milford | — | ◇ UNVERIFIED |
| SRSega Redi-mix | Waterbury | — | ◇ UNVERIFIED |
| SCSuzio Concrete Co, INC the L | Wallingford | — | ◇ UNVERIFIED |
| TJThe Joseph J. Mottes CO. INC. | Stafford | — | ◇ UNVERIFIED |
| TLThe L. Suzio Concrete Company - Milford, Ct Facility | Milford | — | ◇ UNVERIFIED |
| ACAPG- Canaan | Canaan | 20–99 | ◐ LIKELY ACTIVE |
