| CWChenoa Welding & Fabrication, INC. | Chenoa | IL | — | ◇ UNVERIFIED |
 Cherokee Nation Red Wing, LLC | Tulsa | OK | — | ◇ UNVERIFIED |
| CHCherry Hill Fabrication | Curtis Bay | MD | — | ◇ UNVERIFIED |
| CECherrytree Enterprises INC | Kansas City | KS | — | ◇ UNVERIFIED |
| CBChicago Blow Pipe Company | Marquette | MI | — | ◇ UNVERIFIED |
| CTChicago Tube and Iron Company | Locust | NC | — | ◇ UNVERIFIED |
| CEChickasaw Energy Solutions | Marietta | OK | — | ◇ UNVERIFIED |
| CMChi Manufacturing, INC. | Englewood | CO | — | ◇ UNVERIFIED |
| CTChisholm Trail Metal Works, LLC | Ninnekah | OK | — | ◇ UNVERIFIED |
| CSChoctaw Soldiers Industries, INC. | Tulsa | OK | — | ◇ UNVERIFIED |
| CChristiansburgweld | Christiansburg | VA | — | ◇ UNVERIFIED |
| CWChristian W K Metal Works | Bristol | TN | — | ◇ UNVERIFIED |
| CRChristopher Ray Stilson | Port Allegany | PA | — | ◇ UNVERIFIED |
| CFCianbro Fab & Coating CORP (bangor) | Bangor | ME | — | ◇ UNVERIFIED |
| CCCii Cobb Industrial, INC. | Arlington | TX | — | ◇ UNVERIFIED |
| CICinco Iron Works INC | Ontario | CA | — | ◇ UNVERIFIED |
| CHCircle H Welding & Fabrication, INC. | Seale | AL | — | ◇ UNVERIFIED |
| CICirclemaster, INC | Santee | CA | — | ◇ UNVERIFIED |
| CSCitory Solutions, LLC | Saint Cloud | FL | — | ◇ UNVERIFIED |
| CCCives Corporation - Augusta | Augusta | ME | — | ◇ UNVERIFIED |
| CECivic Enterprises INC | West Monroe | LA | — | ◇ UNVERIFIED |
| CEC&j Electronics | National City | CA | — | ◇ UNVERIFIED |
| CICj INC | Detroit Lakes | MN | — | ◇ UNVERIFIED |
| CJC & J Manufacturer | Santa Fe Springs | CA | — | ◇ UNVERIFIED |
| CMC&j Metal Products | Paramount | CA | — | ◇ UNVERIFIED |
| CMCjp Metal Fabrication LLC | Batavia | OH | — | ◇ UNVERIFIED |
| CWC&j Welding and Fabricating, INC | Smyrna | GA | — | ◇ UNVERIFIED |
| CKC K Johnson Industries | Arcata | CA | — | ◇ UNVERIFIED |
| CICkkm INC | Corona | CA | — | ◇ UNVERIFIED |
| CSCK Supply, LLC | Jal | NM | — | ◇ UNVERIFIED |
| CCClabber Creek Closet Co. | Mchenry | IL | — | ◇ UNVERIFIED |
| CMClackamas Metal Works LLC | Portland | OR | — | ◇ UNVERIFIED |
| CSCladding Systems, INC | Tampa | FL | — | ◇ UNVERIFIED |
| CIClad Industries LLC | Macedon | NY | — | ◇ UNVERIFIED |
| CIClamp It Coping LLC | Springville | UT | — | ◇ UNVERIFIED |
| CLClarios LLC | Tampa | FL | — | ◇ UNVERIFIED |
| CAClarke's Allied INC. | Shreveport | LA | — | ◇ UNVERIFIED |
| CPClark Pacific Dba Pacific Embedded Products | Fontana | CA | — | ◇ UNVERIFIED |
| CSClark Substations L L C | Calera | AL | — | ◇ UNVERIFIED |
| CTClark Technology Systems INC. | Milton | PA | — | ◇ UNVERIFIED |
| CWClark Welding and Fabricating, INC. | Frederick | MD | — | ◇ UNVERIFIED |
| CGClassic Gutter Systems LLC | Galesburg | MI | — | ◇ UNVERIFIED |
| CIClassic Iron Works LLC | Hubbard | OR | — | ◇ UNVERIFIED |
| CMClassic Metalworks LLC | Hull | GA | — | ◇ UNVERIFIED |
| CMClassic Metalworks, LLC | Nicholson | GA | — | ◇ UNVERIFIED |
| CMClassic Metalworks, LLC | Athens | GA | — | ◇ UNVERIFIED |
| CSClassic Sheet Metal, INC. | Franklin Park | IL | — | ◇ UNVERIFIED |
| CFClayton Fabrication and Metal Works INC. | Sikeston | MO | — | ◇ UNVERIFIED |
| CEClemenson Enterprises INC Dba Cei | Brooklyn Park | MN | — | ◇ UNVERIFIED |
| CSClermont Steel Fabricating, LLC | Batavia | OH | — | ◇ UNVERIFIED |
