| BABristol Aluminum CO | Levittown | 20–99 | ● ACTIVE |
B-tec Solutions INC | Croydon | 20–99 | ● ACTIVE |
Btm INC | Jim Thorpe | 20–99 | ● ACTIVE |
B & W Machine Works, INC. | Perkasie | 1–19 | ● ACTIVE |
Caldwell CORP | Emporium | 1–19 | ● ACTIVE |
Caltech Manufacturing, INC | Warminster | 20–99 | ● ACTIVE |
| CSCardinal Systems, INC. | Schuylkill Haven | 100–499 | ● ACTIVE |
Cdm Holdings, INC. | Philadelphia | 20–99 | ● ACTIVE |
Chalmers & Kubeck, INC. | Aston | 100–499 | ● ACTIVE |
| CCChampion Carrier CORP | Hermitage | 100–499 | ● ACTIVE |
Chick Machine Company, LLC | Butler | 20–99 | ● ACTIVE |
Cid Associates INC | Sarver | 20–99 | ● ACTIVE |
Clark Metal Products CO | Blairsville | 20–99 | ● ACTIVE |
Clearfield Metal Technologies INC | Clearfield | 20–99 | ● ACTIVE |
C & L Rivet CO INC | Hatboro | 1–19 | ● ACTIVE |
Cmg Process, INC | Clark | 20–99 | ● ACTIVE |
Cnc Manufacturing INC | Coatesville | 1–19 | ● ACTIVE |
Cnc Specialties Manufacturing INC | Apollo | 20–99 | ● ACTIVE |
| CFCompucraft Fabricators INC | Montgomeryville | 20–99 | ● ACTIVE |
Computer Components Corporation | Philadelphia | 20–99 | ● ACTIVE |
Container Research CORP | Aston | 100–499 | ● ACTIVE |
Contine CORP | Erie | 20–99 | ● ACTIVE |
Corestar International Corporation | Irwin | 20–99 | ● ACTIVE |
Corry Manufacturing Company | Corry | 100–499 | ● ACTIVE |
Cp Industries Holdings, INC | Mckeesport | 20–99 | ● ACTIVE |
| CBCraft Bilt Manufacturing CO | Souderton | 20–99 | ● ACTIVE |
Custom Container Solutions LLC | Milton | 20–99 | ● ACTIVE |
Custom Engineering CO | Erie | 20–99 | ● ACTIVE |
Custom Laminating CORP | Mount Bethel | 20–99 | ● ACTIVE |
| DPDanco Precision, INC. | Phoenixville | 20–99 | ● ACTIVE |
Daniel Leiss | Somerset | 20–99 | ● ACTIVE |
| DDDechert Dynamics CORP | Palmyra | 20–99 | ● ACTIVE |
Deist Industries, LLC | Hadley | 100–499 | ● ACTIVE |
Derbyshire Machine & Tool CO | Philadelphia | 20–99 | ● ACTIVE |
Deval Life Cycle Support LLC | Philadelphia | 100–499 | ● ACTIVE |
Diamond Manufacturing Company | Wyoming | 100–499 | ● ACTIVE |
D. L. Martin CO. | Mercersburg | 100–499 | ● ACTIVE |
Dolans Welding & Steel Fabrication CO INC | Johnstown | 20–99 | ● ACTIVE |
D & R Machine Co., LLC | Southampton | 20–99 | ● ACTIVE |
| DMDrv Metal Fab LLC | East Waterford | 1–19 | ● ACTIVE |
| DCDura-bond Coating, INC. -- Duquesne | Duquesne | 20–99 | ● ACTIVE |
Dura-bond Steel CORP | Export | 20–99 | ● ACTIVE |
| EPEF Precision | Willow Grove | 20–99 | ● ACTIVE |
| EEElectron Energy LLC | Landisville | 100–499 | ● ACTIVE |
Elemental Shelter Solutions, LLC | Burgettstown | 20–99 | ● ACTIVE |
Ellwood City Forge Company | Ellwood City | 100–499 | ● ACTIVE |
Ellwood Crankshaft and Machine Company | Hermitage | 100–499 | ● ACTIVE |
| ECEllwood Crankshaft & Mach Co/sharon | Sharon | 20–99 | ● ACTIVE |
| ENEllwood National Crankshaft Company | Irvine | 100–499 | ● ACTIVE |
Elsner Engineering Works INC | Hanover | 20–99 | ● ACTIVE |