| CSCentral Sheet Metal, LLC | Seminole | OK | — | ◇ UNVERIFIED |
| CSCentral Sheet Metal Products, INC. | Skokie | IL | — | ◇ UNVERIFIED |
| CSCentral States Manufacturing, INC. | Hartford | SD | — | ◇ UNVERIFIED |
| CSCentral Steel & Ornamental Supply CO | Los Angeles | CA | — | ◇ UNVERIFIED |
| CTCentral Texas Express Metalwork, LLC | San Antonio | TX | — | ◇ UNVERIFIED |
| CVCentral Valley Fabricators | Stockton | CA | — | ◇ UNVERIFIED |
| CWCentral Welding & Machine LLC | Hutchinson | KS | — | ◇ UNVERIFIED |
| CWCentral Wire & Iron Works INC | Saint Louis | MO | — | ◇ UNVERIFIED |
| CWCentral Wisconsin Flex | Weston | WI | — | ◇ UNVERIFIED |
| CICenturion Industries INC | Garrett | IN | — | ◇ UNVERIFIED |
| CCCentury Corrosion Technologies | Houston | TX | — | ◇ UNVERIFIED |
| CICentury Instrument & Machine Co., INC. | Houston | TX | — | ◇ UNVERIFIED |
| CMCentury Metals & Supplies, INC. | Miami Gardens | FL | — | ◇ UNVERIFIED |
| CMCentury Mfg Industries, INC. | Las Vegas | NV | — | ◇ UNVERIFIED |
| CSCentury Steel Products, INC. | Sterling | VA | — | ◇ UNVERIFIED |
| CICeo, INC. | Sapulpa | OK | — | ◇ UNVERIFIED |
| CCCerta Craft, Inc. | Indianapolis | IN | — | ◇ UNVERIFIED |
| CICerti-fab Industries, INC. | Crosby | TX | — | ◇ UNVERIFIED |
| CSCertified Stainless Service Dba Westmark | Atwater | CA | — | ◇ UNVERIFIED |
| CICew INC | Bakersfield | CA | — | ◇ UNVERIFIED |
| CMCfc Manufacturing Co., INC. | Carbondale | PA | — | ◇ UNVERIFIED |
| CWCfc Wire Forms, INC | Batavia | IL | — | ◇ UNVERIFIED |
| CHCfm Heating & Air Conditioning INC | Ogden | UT | — | ◇ UNVERIFIED |
| CICgk INC Dba Paradise Steel | South El Monte | CA | — | ◇ UNVERIFIED |
| CICgk INC Dba Premier Steel Fabrication | South El Monte | CA | — | ◇ UNVERIFIED |
| CGC & G Machine | Granby | MA | — | ◇ UNVERIFIED |
| CMChadwick Manufacturing, LTD. | Chadwick | IL | — | ◇ UNVERIFIED |
| CMChallenge Machine and Fabrication, INC. | Humble | TX | — | ◇ UNVERIFIED |
| CLChallenger Lifts INC | Louisville | KY | — | ◇ UNVERIFIED |
| CTChamco Tools | Kansas City | MO | — | ◇ UNVERIFIED |
| CEChamfer Engineering INC | Brooklyn Park | MN | — | ◇ UNVERIFIED |
| CIChampion Ironworks Incorporated | Berryville | VA | — | ◇ UNVERIFIED |
| CSChampion Safe CO. INC. | Provo | UT | — | ◇ UNVERIFIED |
| CTChampion Tool Storage | Hood River | OR | — | ◇ UNVERIFIED |
 Chancey Metals Ramonda Blvd Facility | Jacksonville | FL | — | ◇ UNVERIFIED |
 Chandler Industries, INC. | Littleton | CO | — | ◇ UNVERIFIED |
| Chandler Industries INC Stremel Division | Minneapolis | MN | — | ◇ UNVERIFIED |
| CMChannel Manufacturing INC. | Port Washington | NY | — | ◇ UNVERIFIED |
| CFChannelview Facility | Houston | TX | — | ◇ UNVERIFIED |
| CLCharley's LP Truck CORP. | Orlando | FL | — | ◇ UNVERIFIED |
| CWCharps Welding & Fabricating INC | Clearbrook | MN | — | ◇ UNVERIFIED |
| CFCharter Foundry CO INC | Huntington Park | CA | — | ◇ UNVERIFIED |
| CIChart INC | Fremont | CA | — | ◇ UNVERIFIED |
| CIChart Industries, LLC | Troy | NY | — | ◇ UNVERIFIED |
| CChassix | Port Huron | MI | — | ◇ UNVERIFIED |
| CPChatsworth Products INC | Chatsworth | CA | — | ◇ UNVERIFIED |
| CMChattanooga Machine & Fabricators, INC. | Hixson | TN | — | ◇ UNVERIFIED |
| CPCHDR Properties, LLC | Winfield | MO | — | ◇ UNVERIFIED |
| CWCheckpoint Welding - Fabrication INC | Minneapolis | MN | — | ◇ UNVERIFIED |
| CDChemistry Design Werks LLC | St Paul | MN | — | ◇ UNVERIFIED |
| 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 | Athens | GA | — | ◇ UNVERIFIED |
| CMClassic Metalworks, LLC | Nicholson | 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 |
