| CCCustom Concepts Miami Inc | Miami | FL | — | ◇ UNVERIFIED |
| CCCustom Copper Designs | Edmond | OK | — | ◇ UNVERIFIED |
| CCCustom Corrugated & Supply, LLC | Gray | LA | — | ◇ UNVERIFIED |
 Custom Design & Manufacturing | Carrollton | MI | — | ◇ UNVERIFIED |
| CFCustom Fabricated Metals, LLC | Perris | CA | — | ◇ UNVERIFIED |
 Custom Iron Works | Lodi | CA | — | ◇ UNVERIFIED |
| Custom Iron Works, INC. | South Beloit | IL | — | ◇ UNVERIFIED |
| CJCustom Job Shop, LLC. | Topeka | KS | — | ◇ UNVERIFIED |
| CLCustom Land Holding Company LLC | LaBelle | FL | — | ◇ UNVERIFIED |
| CMCustom Machining INC | Mount Sterling | KY | — | ◇ UNVERIFIED |
 Custom Marine Components, INC. | Jacksonville | FL | — | ◇ UNVERIFIED |
| CMCustom Metal Products, INC. | Los Angeles (chatsworth Area) | CA | — | ◇ UNVERIFIED |
| CMCustom Metal Roofing, INC. | Murrayville | GA | — | ◇ UNVERIFIED |
| CMCustom Metals | Little Rock | AR | — | ◇ UNVERIFIED |
| CMCustom Metal & Siding | Leesville | LA | — | ◇ UNVERIFIED |
| CMCustom Metal Works, INC. | Rincon | GA | — | ◇ UNVERIFIED |
| CMCustom Molded Products | Phoenix | AZ | — | ◇ UNVERIFIED |
| CPCustom Packline Engineering | Visalia | CA | — | ◇ UNVERIFIED |
| CPCustom Pipe & Coupling CO INC | Woodburn | OR | — | ◇ UNVERIFIED |
| CPCustom Pipe & Coupling Co., INC. | Lubbock | TX | — | ◇ UNVERIFIED |
| CPCustom Pipe & Coupling Co., INC. | Fresno | CA | — | ◇ UNVERIFIED |
 Custom Products of Litchfield INC | Litchfield | MN | — | ◇ UNVERIFIED |
| CSCustom Sheet and Plate, LLC | Tarentum | PA | — | ◇ UNVERIFIED |
| CSCustom Sheet and Steel Fabrication INC. | Council Grove | KS | — | ◇ UNVERIFIED |
| CSCustom Sheet Metal, INC. | Gaithersburg | MD | — | ◇ UNVERIFIED |
| CSCustom Sheetmetal Services, INC. | Durham | NC | — | ◇ UNVERIFIED |
| CSCustom Sheet & Steel Fabricators | Council Grove | KS | — | ◇ UNVERIFIED |
| CSCustom Stainless Steel Equipment Co. Inc. | LaBelle | FL | — | ◇ UNVERIFIED |
| CSCustom Stainless Steel INC | Shoreview | MN | — | ◇ UNVERIFIED |
| CSCustom Steel Manufacturing INC. | Belton | MO | — | ◇ UNVERIFIED |
| CSCustom Steel Service | Ames | IA | — | ◇ UNVERIFIED |
| CTCustom Tool & Design Company INC | Huntingdon | TN | — | ◇ UNVERIFIED |
| CWCustom Welding INC. | Frenchtown | NJ | — | ◇ UNVERIFIED |
| CMCutters Machine Tool INC | Lexington | TN | — | ◇ UNVERIFIED |
| CECutting Edge Fabrication, INC. | Gastonia | NC | — | ◇ UNVERIFIED |
| CECutting Edge Manufacturing, INC. | Nampa | ID | — | ◇ UNVERIFIED |
| CLCW Laser and Fabrication LLC | Grandview | MO | — | ◇ UNVERIFIED |
| CPCw Precision Fabrication and Welding, INC. | Houston | TX | — | ◇ UNVERIFIED |
| CSCwp Sheet Metal, INC. | Geneva | FL | — | ◇ UNVERIFIED |
| CSCw Seahorn Enterprises LTD | Houston | TX | — | ◇ UNVERIFIED |
| CICyclops Iron Works | Mamaroneck | NY | — | ◇ UNVERIFIED |
| CMCygnet Manufacturing CO. INC | Oaks | PA | — | ◇ UNVERIFIED |
| CFCyncal Fabricators Inc | Bay Shore | NY | — | ◇ UNVERIFIED |
| CFCypress Fabrication Services, L.L.C. | St Martinville | LA | — | ◇ UNVERIFIED |
| CTCzech Tool, INC. | Saegertown | PA | — | ◇ UNVERIFIED |
| DLD2h, LLC | Salem | OR | — | ◇ UNVERIFIED |
| DEDade Engineering Group LLC | Miami | FL | — | ◇ UNVERIFIED |
| DUDaeil USA Corporation | Valley | AL | — | ◇ UNVERIFIED |
| DEDa Eun Pacific | Tamuning | GU | — | ◇ UNVERIFIED |
| DID'agostino Iron Works | East Rochester | NY | — | ◇ UNVERIFIED |
