Ab Precision Grinding CO INC | Easton | 1–19 | ● ACTIVE |
Accrotool, INC. | New Kensington | 100–499 | ● ACTIVE |
| AFAccu-fire Fabrication, INC | Morrisville | 20–99 | ● ACTIVE |
Accutrex Products INC | Canonsburg | 100–499 | ● ACTIVE |
| APAcero Precision | West Chester | 20–99 | ● ACTIVE |
| AMAcme Machine & Welding Co., LLC | Punxsutawney | 100–499 | ● ACTIVE |
Action Manufacturing CO | Bristol | — | ● ACTIVE |
Action Manufacturing CO | Atglen | — | ● ACTIVE |
Admiral Valve LLC | Kennett Square | — | ● ACTIVE |
Adm Welding and Fabrication, LLC. | Warren | 1–19 | ● ACTIVE |
| AFAdvanced Finishing Usa, INC. | Fairview | 20–99 | ● ACTIVE |
Advanced Powder Products, INC. | Philipsburg | 100–499 | ● ACTIVE |
| ACAll Clad Metalcrafters/canonsburg Plt | Canonsburg | 100–499 | ● ACTIVE |
Allegheny Bradford CORP | Lewis Run | 20–99 | ● ACTIVE |
| ASAllegheny Surface Technology | Lewis Run | 20–99 | ● ACTIVE |
Allegheny Tool Mold & Manufacturing, INC | Clarendon | 1–19 | ● ACTIVE |
Allegheny Valve & Coupling, INC. | Warren | 20–99 | ● ACTIVE |
Alston Machine Co., INC. | Pittsburgh | 1–19 | ● ACTIVE |
American Hollow Boring CO | Erie | 1–19 | ● ACTIVE |
| ANAmerican Nickeloid Co/walnutport | Walnutport | 20–99 | ● ACTIVE |
American Tinning & Galvanizing CO | Erie | 20–99 | ● ACTIVE |
American Turned Products INC | Fairview | 20–99 | ● ACTIVE |
Amuneal Manufacturing CORP | Philadelphia | 20–99 | ● ACTIVE |
Amz Manufacturing CORP | York | — | ● ACTIVE |
Apex North America INC | Donora | 20–99 | ● ACTIVE |
Apx Enclosures INC | Greencastle | 20–99 | ● ACTIVE |
Ashby Manufacturing CO INC | Cranberry Township | 1–19 | ● ACTIVE |
Ashley Machine & Tool CO | Wyoming | 20–99 | ● ACTIVE |
Ash/tec, INC. | Hegins | 20–99 | ● ACTIVE |
Associated Spring Us, LLC | Corry | 100–499 | ● ACTIVE |
Astley Precision Machine Company, INC. | Irwin | 20–99 | ● ACTIVE |
Astro Machine Works INC | Ephrata | 100–499 | ● ACTIVE |
Automation Devices INC | Fairview | 20–99 | ● ACTIVE |
Ballymore Company, INC | Coatesville | 100–499 | ● ACTIVE |
Baum Precision Machining, INC. | Pipersville | 20–99 | ● ACTIVE |
Bcl Manufacturing INC | Windber | 20–99 | ● ACTIVE |
Bearing Service Company of Pennsylvania | Pittsburgh | 20–99 | ● ACTIVE |
Berks Engineering Company | Reading | 1–19 | ● ACTIVE |
| BIBestweld INC | Pottstown | 20–99 | ● ACTIVE |
Betts Industries, INC. | Warren | 100–499 | ● ACTIVE |
B&g Manufacturing CO INC | Hatfield | 100–499 | ● ACTIVE |
Bgm Fastener CO INC | Honesdale | 20–99 | ● ACTIVE |
Big B Manufacturing, INC. | Klingerstown | 20–99 | ● ACTIVE |
Billet Industries INC | York | 20–99 | ● ACTIVE |
Blue Mountain Machine INC | Lehighton | 20–99 | ● ACTIVE |
Bodycote Thermal Processing, INC. | Emigsville | — | ● ACTIVE |
Bonney Forge CORP | Mount Union | 100–499 | ● ACTIVE |
Bon Tool CO | Gibsonia | 20–99 | ● ACTIVE |
Bra Vor Tool & Die CO INC | Meadville | 1–19 | ● ACTIVE |
| BABristol Aluminum CO | Levittown | 20–99 | ● ACTIVE |