| BFBuilders Fence CO INC | Sun Valley | CA | — | ◇ UNVERIFIED |
| BSBuilders Screen and Aluminum | Westwood | KS | — | ◇ UNVERIFIED |
| BIBuildwise INC | El Cajon | CA | — | ◇ UNVERIFIED |
| BPBw Padilla INC Dba Brian's Welding | San Jose | CA | — | ◇ UNVERIFIED |
| BDBy Design Ornamentals | Riverside | CA | — | ◇ UNVERIFIED |
| CICageco INC | Adelanto | CA | — | ◇ UNVERIFIED |
| CFCaliber Fabrication, LLC | West Valley City | UT | — | ◇ UNVERIFIED |
| CHCapital Heights Iron Works, LLC | Capitol Heights | MD | — | ◇ UNVERIFIED |
| CSCapital Steel Products | Ontario | CA | — | ◇ UNVERIFIED |
| CSCapitol Steel Products | Bakersfield | CA | — | ◇ UNVERIFIED |
| CSCapitol Steel Products a Division of Security | Sacramento | CA | — | ◇ UNVERIFIED |
| CICarfaro, INC. | Trenton | NJ | — | ◇ UNVERIFIED |
| CLCartrust, LLC | Tampa | FL | — | ◇ UNVERIFIED |
| CCCascade Coil Drapery INC | Tualatin | OR | — | ◇ UNVERIFIED |
| CDCaswell Design Build Corporation | Emeryville | CA | — | ◇ UNVERIFIED |
| CMCentra Metal LLC | Osage Beach | MO | — | ◇ UNVERIFIED |
| CICentury Iron Craft, INC | Baldwin Park | CA | — | ◇ UNVERIFIED |
| CGC G Systems INC | Lake Forest | CA | — | ◇ UNVERIFIED |
| CMChancey Metal Products, INC. | Jacksonville | FL | — | ◇ UNVERIFIED |
 Chancey Metals LLC. | Jacksonville | FL | — | ◇ UNVERIFIED |
| CHChanning Hammond | Goleta | CA | — | ◇ UNVERIFIED |
| CIChico Ironworks INC | Chico | CA | — | ◇ UNVERIFIED |
| CUChico Unified School District | Chico | CA | — | ◇ UNVERIFIED |
| CFChris French Metal INC | Oakland | CA | — | ◇ UNVERIFIED |
| CPChris Property Service INC | Greenville | SC | — | ◇ UNVERIFIED |
| CDCimarron Development, INC. | Las Vegas | NV | — | ◇ UNVERIFIED |
| CSCircular Stairs INC | Little Neck | NY | — | ◇ UNVERIFIED |
| CICity Ironsmith, Corporation | Brooklyn | NY | — | ◇ UNVERIFIED |
| CDClark Dietrich Building Systems | Woodland | CA | — | ◇ UNVERIFIED |
| CMClassic Metals | Denver | CO | — | ◇ UNVERIFIED |
| CSClegg Steel | Salt Lake City | UT | — | ◇ UNVERIFIED |
| CFCLUTCH FABRICATION & DESIGN LLC | Bloomington | IN | — | ◇ UNVERIFIED |
| CFCLUTCH FABRICATION & DESIGN LLC | Bloomington | IN | — | ◇ UNVERIFIED |
| CPCmc Post Oklahoma LLC CO Commercial Met / Cmc Southern Post Durant | Durant | OK | — | ◇ UNVERIFIED |
| CRCmc Rebar - Ca - Napa | Napa | CA | — | ◇ UNVERIFIED |
| CSCmc Steel Fabricators, INC Dba \ Cmc Steel Fresno | Fresno | CA | — | ◇ UNVERIFIED |
| CMCnc Metalcraft LLC | Hopkins | MN | — | ◇ UNVERIFIED |
| CCCoastal Construction and Lumber Company, INC | Yuba City | CA | — | ◇ UNVERIFIED |
| CCCobblestone Centre Lc | Oasis | UT | — | ◇ UNVERIFIED |
| CMCollier Metal Works LLC | Blackfoot | ID | — | ◇ UNVERIFIED |
| CCCollision Care at Mosers | Glenside | PA | — | ◇ UNVERIFIED |
| CWColonial Wagon & Wheel | Lancaster | OH | — | ◇ UNVERIFIED |
| CDColumbus Design & Manufacturing, LLC | Columbus | OH | — | ◇ UNVERIFIED |
| CCComplete Construction, INC. | Farmingdale | NY | — | ◇ UNVERIFIED |
| CFComplete Fabrications INC | San Francisco | CA | — | ◇ UNVERIFIED |
| CMComres Mfg. | Tampa | FL | — | ◇ UNVERIFIED |
| CMConant Metal & Light, INC. | Burlington | VT | — | ◇ UNVERIFIED |
| CSConstruction Specialties INC | Muncy | PA | — | ◇ UNVERIFIED |
| CSConstruction Specialties INC | Montgomery | PA | — | ◇ UNVERIFIED |
| CSConstruction Specialties INC | Hughesville | PA | — | ◇ UNVERIFIED |
