| AFAccu-fire Fabrication, INC | Morrisville | 20–99 | ● ACTIVE |
Accurate Marking Products, INC. | New Kensington | — | ● ACTIVE |
Ace Mechanical Fab LLC | Cherry Tree | — | ● ACTIVE |
Acme Machine & Welding Co., LLC | New Kensington | — | ● ACTIVE |
| AIAcorn Industrial Products CO | King of Prussia | — | ● ACTIVE |
Additive Innovations LLC | Pittsburgh | — | ● ACTIVE |
Admiral Valve LLC | Kennett Square | — | ● ACTIVE |
Adm Welding and Fabrication, LLC. | Warren | — | ● ACTIVE |
Advanced Cooling Technologies INC | Lancaster | — | ● ACTIVE |
Advanced Eng Systems LLC | Easton | — | ● ACTIVE |
Advanced Metals Machining LLC | Olyphant | — | ● ACTIVE |
Advanced Testing Services | Erie | — | ● ACTIVE |
| AFAeroparts Fabricating & Machining INC | Nicktown | — | ● ACTIVE |
| ALAlchemy Laser Engraving, LLC | Beaver | — | ● ACTIVE |
Alfa Laval INC | Warrington | — | ● ACTIVE |
Align Precision - Philadelphia, LLC | Horsham | — | ● ACTIVE |
Ally Rental LLC | Monroeville | — | ● ACTIVE |
Altaris Defense LLC | Equinunk | — | ● ACTIVE |
American Animal Arms LLC | New Tripoli | — | ● ACTIVE |
American Baling Products, INC | Ellwood City | — | ● ACTIVE |
Ametek INC | Eighty Four | — | ● ACTIVE |
Ametek, INC. | Horsham | — | ● ACTIVE |
Amick Associates INC | Carnegie | — | ● ACTIVE |
| AMAnderson Metal Industries INC | Franklin | — | ● ACTIVE |
Anvil Welding & Fabrication, LLC | Parker Ford | — | ● ACTIVE |
Apg Acquisition Holdings LLC | Saint Marys | — | ● ACTIVE |
| ATAscended Technologies LLC | Winfield | — | ● ACTIVE |
Astley Precision Machine Company, INC. | Irwin | — | ● ACTIVE |
Atlas Defense Co, LLC | Hummelstown | — | ● ACTIVE |
Aurele M Gatti INC | Fairless Hills | — | ● ACTIVE |
| AFAxis Fastening Systems LLC | York | — | ● ACTIVE |
Ball & Ball LLC | Exton | — | ● ACTIVE |
| BMBauer Machining LLC | Fenelton | — | ● ACTIVE |
Baum Precision Machining, INC. | Pipersville | — | ● ACTIVE |
B & B Dynamic Machining LLC | Warminster | — | ● ACTIVE |
B&b Firearms LLC | Robesonia | — | ● ACTIVE |
B C Supply, LLC | Chambersburg | — | ● ACTIVE |
Bechtel Plant Machinery, INC. | Monroeville | — | ● ACTIVE |
Beistel Machining, INC | Donora | — | ● ACTIVE |
Benfab INC | Brookhaven | — | ● ACTIVE |
Berks Engineering Company | Reading | — | ● ACTIVE |
| BMBfg Manufacturing Services INC | Punxsutawney | 20–99 | ● ACTIVE |
Bosio Metal Specialties, INC. | North Wales | — | ● ACTIVE |
Builders Door & Hardware, INC | Allentown | — | ● ACTIVE |
Busers Imports LLC | Red Lion | — | ● ACTIVE |
Butler Precision Technologies LLC | Bristol | — | ● ACTIVE |
Bvx INC | Feasterville Trevose | — | ● ACTIVE |
Camco Manufacturing INC | Sayre | — | ● ACTIVE |
Cannon Powder Coating LLC | Chambersburg | — | ● ACTIVE |
Cecco Enterprises LLC | Elysburg | — | ● ACTIVE |