| CACommercial and Industrial Piping | Quinby | SC | — | ◇ UNVERIFIED |
| CCCommercial Cooling-par Engineering INC | City of Industry | CA | — | ◇ UNVERIFIED |
| CFCommercial Fabricating and Engineering, Inc. | Wixom | MI | — | ◇ UNVERIFIED |
| CFCommercial Fabricating & Engineering INC | Highland | MI | — | ◇ UNVERIFIED |
| CMCommercial Machine Service INC | Cleveland | OH | — | ◇ UNVERIFIED |
| CMCommercial Metal Company | Fredericksburg | VA | — | ◇ UNVERIFIED |
| CMCommercial Metals Company | Houston | TX | — | ◇ UNVERIFIED |
| CMCommercial Metals Company | Harlingen | TX | — | ◇ UNVERIFIED |
| CMCommercial Metals Company | College Station | TX | — | ◇ UNVERIFIED |
| CMCommercial Metals Company | Savannah | GA | — | ◇ UNVERIFIED |
| CMCommercial Metals Company | Brigham City | UT | — | ◇ UNVERIFIED |
| CNCommercial Neon, INC. | Fresno | CA | — | ◇ UNVERIFIED |
| CPCommercial Piping & Fabricators, INC | Tar Heel | NC | — | ◇ UNVERIFIED |
| CPCommercial Piping & Fabricators, INC. | Wingate | NC | — | ◇ UNVERIFIED |
| CPCommercial Powder Coating INC | Bend | OR | — | ◇ UNVERIFIED |
| CPCommercial Products Group - Rps | Bensenville | IL | — | ◇ UNVERIFIED |
| CRCommercial Resins Blytheville | Blytheville | AR | — | ◇ UNVERIFIED |
| CSCommercial Sandblast CO | Vernon | CA | — | ◇ UNVERIFIED |
| CSCommercial Stainless Fabricators, INC. | Marietta | GA | — | ◇ UNVERIFIED |
| CSCommercial Stainless Incorporated | Bloomsburg | PA | — | ◇ UNVERIFIED |
| CWCommercial Warehouse | Shelbyville | TN | — | ◇ UNVERIFIED |
 Commercial Welding and Machining, Inc. | Clear Lake | MN | — | ◇ UNVERIFIED |
| CACommon's Auto Parts INC | South San Francisco | CA | — | ◇ UNVERIFIED |
| CECommonwealth Equipment - Portable 52462 | Richmond | VA | — | ◇ UNVERIFIED |
| CECommonwealth Equipment - Portable 52619 | North Garden | VA | — | ◇ UNVERIFIED |
| CMCommonwealth Machine CO. | Danville | VA | — | ◇ UNVERIFIED |
| CECompass Equipment | Oroville | CA | — | ◇ UNVERIFIED |
| CPCompass Powder Coating, LLC | Middletown | CT | — | ◇ UNVERIFIED |
| CWCompass Wire Cloth and Industrial Supply CORP. | Vineland | NJ | — | ◇ UNVERIFIED |
| CMCompatible Manufacturing, INC. | Kalispell | MT | — | ◇ UNVERIFIED |
| CCComplete Construction, INC. | Farmingdale | NY | — | ◇ UNVERIFIED |
| CFComplete Fabrications INC | San Francisco | CA | — | ◇ UNVERIFIED |
| CGComplete Grinding Solutions LLC | Irvine | CA | — | ◇ UNVERIFIED |
| CGComplete Grinding Solutions LLC | Laguna Hills | CA | — | ◇ UNVERIFIED |
| CHComplete Heat Treating LLC | Milwaukee | WI | — | ◇ UNVERIFIED |
| CMComplete Machine Solution INC | Fremont | CA | — | ◇ UNVERIFIED |
| CMComplete Metal Fabrication, LLC | Jupiter | FL | — | ◇ UNVERIFIED |
| CRComplete Reconditioning Specialist | Fairhaven | MA | — | ◇ UNVERIFIED |
| CAComplex Aerospace, LLC | Auburn | WA | — | ◇ UNVERIFIED |
| CFComplex Fabricators, Inc. | Salt Lake City | UT | — | ◇ UNVERIFIED |
| CECompliance Edge Knives | San Diego | CA | — | ◇ UNVERIFIED |
| CFComponent Finishing, INC | Santa Clara | CA | — | ◇ UNVERIFIED |
| CSComponent Services Limited Partnership | Oklahoma City | OK | — | ◇ UNVERIFIED |
| CCComponex Corporation | Edgerton | WI | — | ◇ UNVERIFIED |
| CIComposite Industrial Group, INC. | Batavia | OH | — | ◇ UNVERIFIED |
| CPComposite Plastic Systems | Santa Maria | CA | — | ◇ UNVERIFIED |
| CSCompo Steel Products, INC. | Milwaukee | WI | — | ◇ UNVERIFIED |
| CCCompression Components and Services, LLC | Warrington | PA | — | ◇ UNVERIFIED |
| CMComres Mfg. | Tampa | FL | — | ◇ UNVERIFIED |
| CHComstock Heritage Incorporated | Reno | NV | — | ◇ UNVERIFIED |
| CPComtech Precision Machine, INC. | Clearwater | FL | — | ◇ UNVERIFIED |
| CMConant Metal & Light, INC. | Burlington | VT | — | ◇ UNVERIFIED |
| CWConatser Welding and Machine, LLC | King City | CA | — | ◇ UNVERIFIED |
| CConcept1 | North Tonawanda | NY | — | ◇ UNVERIFIED |
| CMConcept Machine & Tool, INC. | Covington | OH | — | ◇ UNVERIFIED |
| CMConcept Manufacturing CO | Holliston | MA | — | ◇ UNVERIFIED |
| CMConcept Metal Products Dba Concept Metal Fabrication LLC | Spring Lake | MI | — | ◇ UNVERIFIED |
| CDConcepts Display LLC | Chaska | MN | — | ◇ UNVERIFIED |
| CEConcordia Enterprises LLC | Antioch | IL | — | ◇ UNVERIFIED |
| CIConcord Iron Works INC | Pittsburg | CA | — | ◇ UNVERIFIED |
| CIConcord Iron Works INC | Pittsburg | CA | — | ◇ UNVERIFIED |
| CSConcord Steel INC | Warren | OH | — | ◇ UNVERIFIED |
| CSConcord Support & Development INC. | Burleson | TX | — | ◇ UNVERIFIED |
| CAConcrete Accessories | Fullerton | CA | — | ◇ UNVERIFIED |
| CCConcrete Chemical Solutions Limited Liability Corporation | Vincentown | NJ | — | ◇ UNVERIFIED |
| CFConcrete Forms Services LLC | West Jordan | UT | — | ◇ UNVERIFIED |
| CRConcrete Reinforcements INC. | Jacksonville | FL | — | ◇ UNVERIFIED |
| CMCondor Manufacturing | Murray | UT | — | ◇ UNVERIFIED |
| CLConectacts LLC | San Bernardino | CA | — | ◇ UNVERIFIED |
| CConeqtec | Carbon | IN | — | ◇ UNVERIFIED |
| CCConeqtec CORP. | Wichita | KS | — | ◇ UNVERIFIED |
| CIConex Industrial Supply | Fort Worth | TX | — | ◇ UNVERIFIED |
| CConexwest | Fontana | CA | — | ◇ UNVERIFIED |
| CWCon-fab Welding INC. | Shreveport | LA | — | ◇ UNVERIFIED |
| CFConfluence Fmc Inc- Harden Industries | Los Angeles | CA | — | ◇ UNVERIFIED |
| CPConley-John Properties LLC | Shelby Township | MI | — | ◇ UNVERIFIED |
| CIConnaughty Industries INC | Rushford | MN | — | ◇ UNVERIFIED |
| CMConnecticut Metalworks, LLC | Newington | CT | — | ◇ UNVERIFIED |
| CSConnecticut Stamping & Bending | New Britain | CT | — | ◇ UNVERIFIED |
| CPConnector Plating CORP | Los Angeles | CA | — | ◇ UNVERIFIED |
| CPConnell Processing Inc,connell Proc CORP | Burbank | CA | — | ◇ UNVERIFIED |
| CMConnelly Machine Works INC Dba Acme Tool Grinding | Santa Ana | CA | — | ◇ UNVERIFIED |
| CMConnelly Mechanical INC. | Springfield | MO | — | ◇ UNVERIFIED |
| CGConner Gibbens | Deepwater | MO | — | ◇ UNVERIFIED |
| CAConover Area Fabricators Inc | Coatsburg | IL | — | ◇ UNVERIFIED |
| CEConquest Engineering Company INC | Shoreview | MN | — | ◇ UNVERIFIED |
| CIConquest Industries INC. | Stow | OH | — | ◇ UNVERIFIED |
| CAConroe Awning and Screen INC. | Montgomery | TX | — | ◇ UNVERIFIED |
| CIConsecon INC | Gardena | CA | — | ◇ UNVERIFIED |
| CSConshohocken Steel Products, INC. | Ambler | PA | — | ◇ UNVERIFIED |
| CFConsol Fabricators CORP | Sun Valley | CA | — | ◇ UNVERIFIED |
| CDConsolidated Devices INC | City of Industry | CA | — | ◇ UNVERIFIED |
| CFConsolidated Fabrication and Construction, INC. | Wilmington | DE | — | ◇ UNVERIFIED |
| CFConsolidated Fabricators | Auburn | MA | — | ◇ UNVERIFIED |
| CFConsolidated Fabricators CORP | Paramount | CA | — | ◇ UNVERIFIED |
| CFConsolidated Fabricators CORP | Galt | CA | — | ◇ UNVERIFIED |
 Consolidated Machine LLC | Neenah | WI | — | ◇ UNVERIFIED |
| CMConsolidated Metal Builders | Clovis | NM | — | ◇ UNVERIFIED |
| CMConsolidated Metal Products | Wyoming | MI | — | ◇ UNVERIFIED |
| CMConsolidated Metal Technologies | Austin | TX | — | ◇ UNVERIFIED |
