Hydro-pac INC | Fairview | 20–99 | ● ACTIVE |
Hygrade Metal Moulding Manufacturing CORP. | Bethlehem | — | ● ACTIVE |
I. Auman Machine Co., INC. | Lebanon | 20–99 | ● ACTIVE |
I & I Sling, LLC | Aston | 20–99 | ● ACTIVE |
Imperial Carbide INC | Meadville | 20–99 | ● ACTIVE |
| ISImperial Systems, INC | Mercer | 100–499 | ● ACTIVE |
Industrial Metal Plating INC | Reading | 20–99 | ● ACTIVE |
Intermetro Industries CORP | Wilkes Barre | — | ● ACTIVE |
International Cartridge CORP | Reynoldsville | 20–99 | ● ACTIVE |
| ITIon Technologies | Ridgway | 20–99 | ● ACTIVE |
Irwin Automation INC | Greensburg | 20–99 | ● ACTIVE |
J.b. Anderson & Son, INC | Irwin | 1–19 | ● ACTIVE |
Jeglinski Group INC | Meadville | — | ● ACTIVE |
Jennison CORP | Carnegie | 20–99 | ● ACTIVE |
Jersey Chrome Plating Company | Pittsburgh | 1–19 | ● ACTIVE |
Jersey Shore Steel CO | Jersey Shore | 100–499 | ● ACTIVE |
| JIJlg Industries INC | Mcconnellsburg | — | ● ACTIVE |
| JLJ & L Precision Machine CO INC | Bethlehem | 20–99 | ● ACTIVE |
John Evans' Sons, Incorporated | Lansdale | 20–99 | ● ACTIVE |
John R. Bromiley Company INC. | Chalfont | 20–99 | ● ACTIVE |
Jolar Machine CO | Dickson City | 1–19 | ● ACTIVE |
| KIKane Innovations Erie | Erie | 20–99 | ● ACTIVE |
| KCKawneer CO INC | Bloomsburg | 100–499 | ● ACTIVE |
| KPKeystone Powdered Metal Co/lewis Run | Lewis Run | 100–499 | ● ACTIVE |
Keystone Sporting Arms, LLC. | Milton | 20–99 | ● ACTIVE |
Kingsbury, INC. | Philadelphia | 100–499 | ● ACTIVE |
Kmm Group, LTD. | Hatboro | 20–99 | ● ACTIVE |
Kovlar Precision Manufacturing, INC. | Bedford | 20–99 | ● ACTIVE |
Lamjen INC | Erie | 1–19 | ● ACTIVE |
Lancaster Metals Science CORP | Lancaster | 20–99 | ● ACTIVE |
Lee Industries, INC. | Philipsburg | — | ● ACTIVE |
Leese & CO INC | Greensburg | 1–19 | ● ACTIVE |
| LHLehigh Heavy Forge CORP | Bethlehem | 100–499 | ● ACTIVE |
| LHLehigh Heavy Forge CORP | Bethlehem | 100–499 | ● ACTIVE |
Lenape Forged Products CORP | West Chester | 20–99 | ● ACTIVE |
| LMLeonhardt Manufacturing CO | Hanover | 20–99 | ● ACTIVE |
Lesjofors Springs America INC | Pittston | 20–99 | ● ACTIVE |
Levan Machine CO INC | Fleetwood | 20–99 | ● ACTIVE |
| LMLibrandis Mach Shop | Middletown | 20–99 | ● ACTIVE |
Linear Machining Technology LLC | Irwin | 1–19 | ● ACTIVE |
Ll Brown INC | Enola | 20–99 | ● ACTIVE |
Lockheed Martin Aeroparts, INC. | Johnstown | 500+ | ● ACTIVE |
Lockheed Martin CORP | Archbald | — | ● ACTIVE |
Lzk Manufacturing, INC | Shrewsbury | 1–19 | ● ACTIVE |
Machined Products Company | Lancaster | 20–99 | ● ACTIVE |
Majr Products CORP | Saegertown | 20–99 | ● ACTIVE |
Mauell CORP | Dillsburg | 20–99 | ● ACTIVE |
M & B Machine, INC. | Carlisle | 20–99 | ● ACTIVE |
Mbt Product Design & Manufacturing INC | Waynesboro | 1–19 | ● ACTIVE |
Mercer Spring & Wire LLC | Townville | — | ● ACTIVE |