| AAmbri | Marlborough | MA | Electrical Equipment, Appliance & Component Manufacturing335910 | — | ◇ UNVERIFIED |
| ALAmerican Light Fixture | Taunton | MA | Electrical Equipment, Appliance & Component Manufacturing335121 | — | ◇ UNVERIFIED |
| AAnalogic | Wakefield | MA | Electrical Equipment, Appliance & Component Manufacturing335313 | — | ◇ UNVERIFIED |
| CLCalorique LLC | Wareham | MA | Electrical Equipment, Appliance & Component Manufacturing335999 | — | ◇ UNVERIFIED |
| CCCarbon Composites INC | Leominster | MA | Electrical Equipment, Appliance & Component Manufacturing335991 | — | ◇ UNVERIFIED |
| CMChapman Mfg CO INC | Avon | MA | Electrical Equipment, Appliance & Component Manufacturing335121 | — | ◇ UNVERIFIED |
| CCChase Coating & Laminating | Oxford | MA | Electrical Equipment, Appliance & Component Manufacturing335999 | — | ◇ UNVERIFIED |
| CHCole Hersee Company | Boston | MA | Electrical Equipment, Appliance & Component Manufacturing335931 | — | ◇ UNVERIFIED |
| CRCpi Radant Technologies Division INC | Clinton | MA | Electrical Equipment, Appliance & Component Manufacturing335999 | — | ◇ UNVERIFIED |
| CLCurrent Lighting - Plympton | Plympton | MA | Electrical Equipment, Appliance & Component Manufacturing335122 | — | ◇ UNVERIFIED |
| FFFoto Factory | Salem | MA | Electrical Equipment, Appliance & Component Manufacturing335110 | — | ◇ UNVERIFIED |
| GWGavitt Wire & Cable | Brookfield | MA | Primary Metal Manufacturing331420 | — | ◇ UNVERIFIED |
| HMHudson Mill LLC | Hudson | MA | Electrical Equipment, Appliance & Component Manufacturing335929 | — | ◇ UNVERIFIED |
| JMJames Monroe Wire and Cable CORP | South Lancaster | MA | Electrical Equipment, Appliance & Component Manufacturing335929 | — | ◇ UNVERIFIED |
| JMJames Monroe Wire & Cable Corporation | Lancaster | MA | Electrical Equipment, Appliance & Component Manufacturing335929 | — | ◇ UNVERIFIED |
| LCLargo Clean Energy | Wilmington | MA | Electrical Equipment, Appliance & Component Manufacturing335911 | — | ◇ UNVERIFIED |
| LPLee Products Company | Everett | MA | Electrical Equipment, Appliance & Component Manufacturing335129 | — | ◇ UNVERIFIED |
| LLitecontrol | Hanson | MA | Electrical Equipment, Appliance & Component Manufacturing335122 | — | ◇ UNVERIFIED |
| MMMicro Mech, INC | Ipswich | MA | Electrical Equipment, Appliance & Component Manufacturing335991 | — | ◇ UNVERIFIED |
| OMOlsen Machine & Tool | Abington | MA | Electrical Equipment, Appliance & Component Manufacturing335221 | — | ◇ UNVERIFIED |
| OSOsram Sylvania | Danvers | MA | Electrical Equipment, Appliance & Component Manufacturing335110 | — | ◇ UNVERIFIED |
| OSOsram Sylvania INC | Danvers | MA | Electrical Equipment, Appliance & Component Manufacturing335110 | — | ◇ UNVERIFIED |
| PTPiconics-well Treatment Unit | Tyngsborough | MA | Electrical Equipment, Appliance & Component Manufacturing335314 | — | ◇ UNVERIFIED |
| RSRockbestos Suprenant Cable | Clinton | MA | Electrical Equipment, Appliance & Component Manufacturing335929 | — | ◇ UNVERIFIED |
| RIRusselectric INC | Hingham | MA | Electrical Equipment, Appliance & Component Manufacturing335313 | — | ◇ UNVERIFIED |
| SPShepard & Parker Incorporated | Fitchburg | MA | Electrical Equipment, Appliance & Component Manufacturing335312 | — | ◇ UNVERIFIED |
| TCTe Connectivity | Worcester, City of | MA | Electrical Equipment, Appliance & Component Manufacturing335929 | — | ◇ UNVERIFIED |
| TITexas Instruments | Mansfield | MA | Electrical Equipment, Appliance & Component Manufacturing335931 | — | ◇ UNVERIFIED |
| TWTwenty Wayland LLC | Wayland | MA | Electrical Equipment, Appliance & Component Manufacturing335999 | — | ◇ UNVERIFIED |
| UPUniversal Products | Brockton | MA | Electrical Equipment, Appliance & Component Manufacturing335999 | — | ◇ UNVERIFIED |
| 11 | South Hadley | MA | Electrical Equipment, Appliance & Component Manufacturing335929 | 20-99 | ◐ LIKELY ACTIVE |
| AIASMPT-AEi. Inc. | Billerica | MA | Electrical Equipment, Appliance & Component Manufacturing335999 | 20-99 | ◐ LIKELY ACTIVE |
| ATAutocook Technologies LLC | Fitchburg | MA | Electrical Equipment, Appliance & Component Manufacturing335220 | — | ◐ LIKELY ACTIVE |
| BEBOEN Engineering Office | Boston | MA | Electrical Equipment, Appliance & Component Manufacturing335931 | 20-99 | ◐ LIKELY ACTIVE |
| CMCircadian Management, INC. | Stoneham | MA | Electrical Equipment, Appliance & Component Manufacturing335132 | — | ◐ LIKELY ACTIVE |
| ECEaton Corporation | Franklin | MA | Electrical Equipment, Appliance & Component Manufacturing335311 | — | ◐ LIKELY ACTIVE |
| EEmc | Rockland | MA | Electrical Equipment, Appliance & Component Manufacturing335313 | 20-99 | ◐ LIKELY ACTIVE |
| FOFiber Optic Center INC | New Bedford | MA | Electrical Equipment, Appliance & Component Manufacturing335921 | — | ◐ LIKELY ACTIVE |
| GWGavitt Wire & Cable | West Brookfield | MA | Electrical Equipment, Appliance & Component Manufacturing335929 | 20-99 | ◐ LIKELY ACTIVE |
| HSHuman Systems Integration INC | East Walpole | MA | Electrical Equipment, Appliance & Component Manufacturing335999 | — | ◐ LIKELY ACTIVE |
| ICIntirion Corporation | Foxboro | MA | Electrical Equipment, Appliance & Component Manufacturing335220 | — | ◐ LIKELY ACTIVE |
| IBIntrepid Battery LLC | Waltham | MA | Electrical Equipment, Appliance & Component Manufacturing335910 | — | ◐ LIKELY ACTIVE |
| ICiRobot Corporation | Bedford | MA | Electrical Equipment, Appliance & Component Manufacturing335210 | 500+ | ◐ LIKELY ACTIVE |
| JEJem Electronics, INC | Franklin | MA | Electrical Equipment, Appliance & Component Manufacturing335931 | — | ◐ LIKELY ACTIVE |
| JAJkb Associates INC. | Seekonk | MA | Electrical Equipment, Appliance & Component Manufacturing335910 | — | ◐ LIKELY ACTIVE |
| JLJLC-Tech LLC | Pembroke | MA | Electrical Equipment, Appliance & Component Manufacturing335122 | 20-99 | ◐ LIKELY ACTIVE |
| LLittleton | Littleton | MA | Electrical Equipment, Appliance & Component Manufacturing335312 | 1-19 | ◐ LIKELY ACTIVE |
| MIM-waves, INC. | Acton | MA | Electrical Equipment, Appliance & Component Manufacturing335312 | — | ◐ LIKELY ACTIVE |
| NCnVent CGIT | Medway | MA | Electrical Equipment, Appliance & Component Manufacturing335313 | 20-99 | ◐ LIKELY ACTIVE |
| PPPierce Power Products CORP | Natick | MA | Electrical Equipment, Appliance & Component Manufacturing335910 | — | ◐ LIKELY ACTIVE |