| CMClifco Metal Mfg. INC | Roy | UT | — | ◇ UNVERIFIED |
| CSClifco Sheet Metal Manufacturing LLC | Portland | OR | — | ◇ UNVERIFIED |
| CCClimate Control CO | Morgantown | WV | — | ◇ UNVERIFIED |
| CCClopay CORP | Russia | OH | — | ◇ UNVERIFIED |
| CMClosest Meadow Building, INC. | Clovis | NM | — | ◇ UNVERIFIED |
| CBClyde Bergemann Power Group, INC. | Jesup | GA | — | ◇ UNVERIFIED |
| CICm&b, INC. | Oakland | CA | — | ◇ UNVERIFIED |
| CCCMC Commercial Real Estate, LLC | Clinton Township | MI | — | ◇ UNVERIFIED |
| CMCmf (custom Metal Fabricators) | Orange | CA | — | ◇ UNVERIFIED |
| CMCnc Metal Solutions, LLC | Champlin | MN | — | ◇ UNVERIFIED |
| CICoastal Industries, INC | Haverhill | MA | — | ◇ UNVERIFIED |
| CSCoastline Shutters & Manufacturing, LLC | Pensacola | FL | — | ◇ UNVERIFIED |
| CSCoast Sheet Metal INC | Costa Mesa | CA | — | ◇ UNVERIFIED |
| CSCoast Sheet Metal, INC. | Huntington Beach | CA | — | ◇ UNVERIFIED |
| CTCoast to Coast Carports INC | Stanfield | OR | — | ◇ UNVERIFIED |
| CTCoast to Coast Metal Finishing CORP | Alhambra | CA | — | ◇ UNVERIFIED |
| CICoatek, INC | Santa Clara | CA | — | ◇ UNVERIFIED |
| CDCobalt Development, Inc. | Arlington | WA | — | ◇ UNVERIFIED |
| CICobraa, INC. | Aviston | IL | — | ◇ UNVERIFIED |
| CACoco Architectural Grilles & Metalcraft & Advanced Architectural Grilles | Holtsville | NY | — | ◇ UNVERIFIED |
| CCody | San Antonio | TX | — | ◇ UNVERIFIED |
| CSCoil Steel Processing LLC | Toledo | OH | — | ◇ UNVERIFIED |
| CCCold Chain, LLC | Boise | ID | — | ◇ UNVERIFIED |
| CTColeman Tommy | Memphis | TN | — | ◇ UNVERIFIED |
| CMColored Metal Products, INC. | Shelby | NC | — | ◇ UNVERIFIED |
| CGColumbia Glass and Window Company | Kansas City | MO | — | ◇ UNVERIFIED |
| CBCommercial Building Components | Lathrop | CA | — | ◇ UNVERIFIED |
| CCCommercial Cooling-par Engineering INC | City of Industry | CA | — | ◇ UNVERIFIED |
| CDCommercial Display Systems | Santa Clarita | CA | — | ◇ UNVERIFIED |
| CDCommercial Display Systems LLC | San Fernando | CA | — | ◇ UNVERIFIED |
| CDCommercial Door | Pomona | CA | — | ◇ UNVERIFIED |
| CDCommercial Door & Hardware INC | Paducah | KY | — | ◇ UNVERIFIED |
| CDCommercial Door Manufacturing INC | Albuquerque | NM | — | ◇ UNVERIFIED |
| CFCommercial Fabricating & Engineering INC | Highland | MI | — | ◇ UNVERIFIED |
| CMCommercial Material and Door Supp INC Dba Comm Mill & Build Supp | Milpitas | CA | — | ◇ UNVERIFIED |
| CMCommercial Metal Plastics and Graphics Inc. | Orlando | FL | — | ◇ UNVERIFIED |
| CPCommercial Products Group - Rps | Bensenville | IL | — | ◇ UNVERIFIED |
| CSCommercial Stainless Fabricators, INC. | Marietta | GA | — | ◇ UNVERIFIED |
| CDComplete Door Systems, INC. | Tucson | AZ | — | ◇ UNVERIFIED |
| CMComplete Manufacturing Services, INC. | Magnolia | TX | — | ◇ UNVERIFIED |
| CMComprehensive Mfg Svcs | Saint Louis | MO | — | ◇ UNVERIFIED |
| CFConcept Frames Incorporated | Newton | NC | — | ◇ UNVERIFIED |
| CFConcrete Forms Services LLC | West Jordan | UT | — | ◇ UNVERIFIED |
| CSCondoors Security Wrought Iron | Fresno | CA | — | ◇ UNVERIFIED |
| CMConnelly Mechanical INC. | Springfield | MO | — | ◇ UNVERIFIED |
| CEConquest Engineering Company INC | Shoreview | MN | — | ◇ UNVERIFIED |
| CAConroe Awning and Screen INC. | Montgomery | TX | — | ◇ UNVERIFIED |
| CSConstructive Sheet Metal INC | Grand Rapids | MI | — | ◇ UNVERIFIED |
| CRContainer Repair Service | Emmaus | PA | — | ◇ UNVERIFIED |
| CCContainment Consultants, INC | Gilroy | CA | — | ◇ UNVERIFIED |
| CIContinental Industries INC. | Elkhart | IN | — | ◇ UNVERIFIED |
| CWContinental Windows and Glass Corporation | Chicago | IL | — | ◇ UNVERIFIED |
| CAControl Access Consultants, INC. | Sacramento | CA | — | ◇ UNVERIFIED |
| CEControlled Enviroments, Inc. | Houston | TX | — | ◇ UNVERIFIED |
| CLCoopers LLC | Boyertown | PA | — | ◇ UNVERIFIED |
| CCCopper Capital Investment Corporation | Tucson | AZ | — | ◇ UNVERIFIED |
| CCCopper Construction Company, INC. | Vidalia | GA | — | ◇ UNVERIFIED |
| CICorban Industries INC | Belton | MO | — | ◇ UNVERIFIED |
| CMCordeck Manufacturing | Denton | TX | — | ◇ UNVERIFIED |
| CMCoren Metal Crafts, CO. | Bensalem | PA | — | ◇ UNVERIFIED |
| CICornell Iron Works, INC. | Mountain Top | PA | — | ◇ UNVERIFIED |
| CWCoronet Window Company | Kansas City | MO | — | ◇ UNVERIFIED |
| CECorporate Equity LLC | Salt Lake City | UT | — | ◇ UNVERIFIED |
| CICorrugated Industries, INC. | Chalmette | LA | — | ◇ UNVERIFIED |
| CICorrugated Industries of Florida, INC | Tampa | FL | — | ◇ UNVERIFIED |
| CMCountywide Mechanical System, INC | Cajon | CA | — | ◇ UNVERIFIED |
| CMCox Machine | Harper | KS | — | ◇ UNVERIFIED |
| CFCpc Fabrication INC | Santa Ana | CA | — | ◇ UNVERIFIED |
| CECph Enterprises INC. | Bruce | WI | — | ◇ UNVERIFIED |
| CICrafts INC. | Manitowoc | WI | — | ◇ UNVERIFIED |
| CCCraftsman Custom Metals, LLC | Schiller Park | IL | — | ◇ UNVERIFIED |
| CHCrease HVAC, Inc. | Rochester | NY | — | ◇ UNVERIFIED |
| CSCreative Sheet Metal INC | Leeds | UT | — | ◇ UNVERIFIED |
| CSCreer Sheet Metal Works | Provo | UT | — | ◇ UNVERIFIED |
| CMCresco Manufacturing INC | Anaheim | CA | — | ◇ UNVERIFIED |
| CLC.r. Laurence CO. Inc./united States Aluminum | Miami | FL | — | ◇ UNVERIFIED |
| CMC&R Machine, LLC | Jacksonville | TX | — | ◇ UNVERIFIED |
| CACrocker Architectural Sheet Metal Co., INC. | Wellesley | MA | — | ◇ UNVERIFIED |
| CLCroft LLC | Magnolia | MS | — | ◇ UNVERIFIED |
| CACrowe and Downey INC. | Smyrna | GA | — | ◇ UNVERIFIED |
| CDCrown Diversified Industries Corporation | Chesterfield | MO | — | ◇ UNVERIFIED |
| CICrown Incorporated | Plato | MN | — | ◇ UNVERIFIED |
| CMCrown Metal Buildings | Cabot | AR | — | ◇ UNVERIFIED |
| CDCrystal Distribution INC | Elk River | MN | — | ◇ UNVERIFIED |
| CWCrystal Window & Door Systems Pa, LLC | Dalton | PA | — | ◇ UNVERIFIED |
| CICsi Industries, INC. | Fairview | PA | — | ◇ UNVERIFIED |
| CBCt Builders | Great Falls | MT | — | ◇ UNVERIFIED |
| CTC & T Building Technologies, LLC | Cypress | TX | — | ◇ UNVERIFIED |
| CPCurbs Plus INC | Ringgold | GA | — | ◇ UNVERIFIED |
| CPCurbs Plus, INC | Glendale | AZ | — | ◇ UNVERIFIED |
| CHCustodio Holdings, LLC | Henrico | VA | — | ◇ UNVERIFIED |
| CACustom Air Ducts By Rick LLC | Saint Louis Park | MN | — | ◇ UNVERIFIED |
| CMCustom-bilt Metals | Mcclellan | CA | — | ◇ UNVERIFIED |
| CCCustom Copper Designs | Edmond | OK | — | ◇ UNVERIFIED |
| CCCustom Corrugated & Supply, LLC | Gray | LA | — | ◇ UNVERIFIED |
 Custom Doors & Associates, LLC | Davie | FL | — | ◇ UNVERIFIED |
| CLCustom Land Holding Company LLC | LaBelle | FL | — | ◇ UNVERIFIED |
| CMCustom Metal Buildings LLC | Paris | TN | — | ◇ UNVERIFIED |
| CMCustom Metal Products, INC. | Los Angeles (chatsworth Area) | CA | — | ◇ UNVERIFIED |
| CMCustom Metal Roofing, INC. | Murrayville | GA | — | ◇ UNVERIFIED |
