| RPRandolph Products CO | Chicopee | MA | Chemical Manufacturing325510 | 20-99 | ◇ UNVERIFIED |
| GMGaf Materials CORP | Walpole | MA | Chemical Manufacturing325510 | — | ◇ UNVERIFIED |
| RGRousselot Gelatine | Peabody | MA | Chemical Manufacturing325199 | — | ◇ UNVERIFIED |
| CCChemco CORP | Lawrence | MA | Chemical Manufacturing325611 | — | ◇ UNVERIFIED |
| DPDurant Performance Coatings INC | Revere | MA | Chemical Manufacturing325510 | 1-19 | ◇ UNVERIFIED |
| HCHyperion Catalysis INC | Cambridge | MA | Chemical Manufacturing325180 | 20-99 | ◇ UNVERIFIED |
| IIIndusol INC | Sutton | MA | Chemical Manufacturing325211 | 1-19 | ◇ UNVERIFIED |
| OLOraceutical LLC | Lee | MA | Chemical Manufacturing325412 | 1-19 | ◇ UNVERIFIED |
| PIPerma INC | Bedford | MA | Chemical Manufacturing325611 | 1-19 | ◇ UNVERIFIED |
| PDPhoto Detection Systems INC | Boxborough | MA | Chemical Manufacturing325413 | 20-99 | ◇ UNVERIFIED |
| PPPittsfield Plastics Engineering LLC | Pittsfield | MA | Chemical Manufacturing325211 | 100-499 | ◇ UNVERIFIED |
| SESaeilo Enterprises | Worcester | MA | Chemical Manufacturing325412 | 20-99 | ◇ UNVERIFIED |
| ABAbbott Bioresearch Center | Worcester | MA | Chemical Manufacturing325412 | — | ◇ UNVERIFIED |
| ABAbbvie Biologics | Worcester | MA | Chemical Manufacturing325414 | — | ◇ UNVERIFIED |
| ANActega North America | Shrewsbury | MA | Chemical Manufacturing325910 | — | ◇ UNVERIFIED |
| AAcusphere | Tewksbury | MA | Chemical Manufacturing325412 | — | ◇ UNVERIFIED |
| AIAcusphere INC | Watertown | MA | Chemical Manufacturing325412 | — | ◇ UNVERIFIED |
| AMAlbany Molecular Research, Inch | Burlington | MA | Chemical Manufacturing325412 | — | ◇ UNVERIFIED |
| ADAlden Div of Mrc | West Springfield | MA | Chemical Manufacturing325612 | — | ◇ UNVERIFIED |
| APAlnylam Pharmaceutals | Cambridge | MA | Chemical Manufacturing325411 | — | ◇ UNVERIFIED |
 American Polymers | Oxford | MA | Chemical Manufacturing325211 | — | ◇ UNVERIFIED |
| ATAnika Therapeutics | Woburn | MA | Chemical Manufacturing325412 | — | ◇ UNVERIFIED |
| ARApex Resources Technologies | Pittsfield | MA | Chemical Manufacturing325211 | — | ◇ UNVERIFIED |
| APArmstrong Pharmaceuticals INC | Boston, City of | MA | Chemical Manufacturing325412 | — | ◇ UNVERIFIED |
| AIArtisan Industries Incorporated | Waltham | MA | Chemical Manufacturing325412 | — | ◇ UNVERIFIED |
| AOAssociates of Cape Cod INC | Falmouth | MA | Chemical Manufacturing325412 | — | ◇ UNVERIFIED |
| AAstrazeneca | Westborough | MA | Chemical Manufacturing325412 | — | ◇ UNVERIFIED |
| APAvista Pharma Solutions | Agawam | MA | Chemical Manufacturing325412 | — | ◇ UNVERIFIED |
| BEBae Electronics & Integrated Solutions | Lexington | MA | Chemical Manufacturing325992 | — | ◇ UNVERIFIED |
| BCBayer CORP Plastics Tech | Springfield | MA | Chemical Manufacturing325211 | — | ◇ UNVERIFIED |
| BHBayer Healthcare LLC | Medfield | MA | Chemical Manufacturing325413 | — | ◇ UNVERIFIED |
| BMBayer Material Science LLC | Whately | MA | Chemical Manufacturing325211 | — | ◇ UNVERIFIED |
| BDBecton Dickinson Labware | Bedford | MA | Chemical Manufacturing325413 | — | ◇ UNVERIFIED |
| BIBiogen Incorporated | Cambridge, Town of | MA | Chemical Manufacturing325412 | — | ◇ UNVERIFIED |
| BLBraintree Lab | Holbrook | MA | Chemical Manufacturing325412 | — | ◇ UNVERIFIED |
| BBBrammer Bio Ma LLC | Somerville | MA | Chemical Manufacturing325412 | — | ◇ UNVERIFIED |
| BCButcher CO. | Marlborough | MA | Chemical Manufacturing325222 | — | ◇ UNVERIFIED |
| CCCabot Corporation | Billerica | MA | Chemical Manufacturing325182 | — | ◇ UNVERIFIED |
| CJCf Jameson | Haverhill | MA | Chemical Manufacturing325199 | — | ◇ UNVERIFIED |
| CSChase & Sons INC | Randolph, Town of | MA | Chemical Manufacturing325998 | — | ◇ UNVERIFIED |
| CCChemdesign CORP | Fitchburg | MA | Chemical Manufacturing325000 | — | ◇ UNVERIFIED |
| CHClean Harbors Technical Services - North Andover Facility | North Andover | MA | Chemical Manufacturing325188 | — | ◇ UNVERIFIED |
| CCConsolidated Color | Peabody | MA | Chemical Manufacturing325199 | — | ◇ UNVERIFIED |
| CCCreative Chemicals INC | Holyoke | MA | Chemical Manufacturing325611 | — | ◇ UNVERIFIED |
| CTCri Tech | Hanover | MA | Chemical Manufacturing325212 | — | ◇ UNVERIFIED |
| CICri-tech INC | Hanover | MA | Chemical Manufacturing325212 | — | ◇ UNVERIFIED |
| CICytec Industries | Springfield | MA | Chemical Manufacturing325211 | — | ◇ UNVERIFIED |
| ECEastern Chem Lac | Malden | MA | Chemical Manufacturing325510 | — | ◇ UNVERIFIED |
| EPEastern Process Company | Hingham | MA | Chemical Manufacturing325510 | — | ◇ UNVERIFIED |
| EFEast Freetown Auto Salvage LLC | Freetown | MA | Chemical Manufacturing325998 | — | ◇ UNVERIFIED |
