| NMNorthwestern Mfg | Lake City | 20–99 | ◐ LIKELY ACTIVE |
| PFProducts Finishing Inc/erie | Erie | — | ◐ LIKELY ACTIVE |
| PIPsb Industries INC | Erie | — | ◐ LIKELY ACTIVE |
| YIYork-seaway Industrial Products, INC | Lake City | 20–99 | ◐ LIKELY ACTIVE |
| FMF3 Metalworx | North East | — | ◐ LIKELY ACTIVE |
| ACAdvanced Custom Chrome | Erie | — | ◇ UNVERIFIED |
| AMAdvanced Mold Tech/erie | Erie | — | ◇ UNVERIFIED |
| ACApplied Coating Solutions/erie | Erie | — | ◇ UNVERIFIED |
| AEApw Erie/erie | Erie | — | ◇ UNVERIFIED |
| EPEagle Precision Tooling INC | Erie | — | ◇ UNVERIFIED |
| ECErie Ceramic Arts CO LLC | Erie | — | ◇ UNVERIFIED |
| EPErie Protective Coatings | Erie | — | ◇ UNVERIFIED |
| FIFralo Industries INC | Erie | — | ◇ UNVERIFIED |
| GLGreat Lakes Case & Cabinet | Edinboro | — | ◇ UNVERIFIED |
| GLGreat Lakes Manufacturing | Corry | — | ◇ UNVERIFIED |
| HMHarrison Machine Co/wesleyville Plt | Erie | — | ◇ UNVERIFIED |
| HPHi-tech Plating | Erie | — | ◇ UNVERIFIED |
| KEKnox Earl E CO | Erie | — | ◇ UNVERIFIED |
| MWMcshane Welding CO INC | Erie | — | ◇ UNVERIFIED |
| MIModern Industries | Erie | — | ◇ UNVERIFIED |
| NFNatl Fabricators & Mach/north East Plt | North East | — | ◇ UNVERIFIED |
| PFPatriot Forge / Bay City Forge Div | Erie | — | ◇ UNVERIFIED |
| PDPower Drives INC. | Erie | — | ◇ UNVERIFIED |
| RURidg U Rak/north East | North East | — | ◇ UNVERIFIED |
| RURidg U Rak/state Line Plt | North East | — | ◇ UNVERIFIED |
| RKRm Kerner CO | Erie | — | ◇ UNVERIFIED |
| SMSeaway Manufacturing CORP | Erie | — | ◇ UNVERIFIED |
| SISelect-tron Industries | Erie | — | ◇ UNVERIFIED |
| STSnap Tite Autoclave Engr Fluid Components Div | Erie | — | ◇ UNVERIFIED |
| ZIZurn Ind INC General Air Div | Erie | — | ◇ UNVERIFIED |
| ZIZurn Ind Llc/specification Drainage Opr | Erie | — | ◇ UNVERIFIED |
| CPCorry Plant | Corry | 20–99 | ◐ LIKELY ACTIVE |
Custom Engineering CO. | Erie | — | ◐ LIKELY ACTIVE |
| ENEllwood National Forge Company | Corry | — | ◐ LIKELY ACTIVE |
| EAEnjet Aero Erie, Inc. | Erie | 20–99 | ◐ LIKELY ACTIVE |
| EErie | Erie | 1–19 | ◐ LIKELY ACTIVE |
| FCFluid Connectors Erie IPD | Erie | 20–99 | ◐ LIKELY ACTIVE |
| FCFluid Connectors Union City MAIN | Union City | 100–499 | ◐ LIKELY ACTIVE |
Great Lakes Automation Services INC | Mc Kean | — | ◐ LIKELY ACTIVE |
| JCJenidas Corporation DBA Gene Davis Sales and Service | Erie | 20–99 | ◐ LIKELY ACTIVE |
| KIKane Innovations Erie | Erie | 20–99 | ◐ LIKELY ACTIVE |
| MCMachining Concepts Inc. | Erie | 20–99 | ◐ LIKELY ACTIVE |
| MEModular Engineering Company | Erie | 20–99 | ◐ LIKELY ACTIVE |
| NNorth | Erie | 20–99 | ◐ LIKELY ACTIVE |
| NENorth East | North East | 20–99 | ◐ LIKELY ACTIVE |
| PMPennside Machining, LLC | Girard | — | ◐ LIKELY ACTIVE |
Peters' Heat Treating, Inc. McKean | Mckean | 1–19 | ◐ LIKELY ACTIVE |
| PMPHB Machining & Molding | Fairview | 100–499 | ◐ LIKELY ACTIVE |
Premier Precision Machining PA, LLC dba D&E Machining | Corry | 20–99 | ◐ LIKELY ACTIVE |
| RMRichlyn Mfg Inc | Erie | 20–99 | ◐ LIKELY ACTIVE |