| HIHercules Incorporated - Milwaukee Plant | Milwaukee | WI | Chemical Manufacturing325211 | 20-99 | ◐ LIKELY ACTIVE |
Hentzen Coatings, INC. | Milwaukee | WI | Chemical Manufacturing325510 | 20-99 | ◐ LIKELY ACTIVE |
| LILiphatech INC. | Milwaukee | WI | Chemical Manufacturing325320 | 20-99 | ◐ LIKELY ACTIVE |
| MBMolecular Biology Resources INC | Milwaukee | WI | Food Manufacturing311930 | 20-99 | ◐ LIKELY ACTIVE |
| TRTwinco Romax | Milwaukee | WI | Chemical Manufacturing325612 | — | ◐ LIKELY ACTIVE |
| MAMaterion Advanced Chemicals INC. | Milwaukee | WI | Chemical Manufacturing325180 | — | ◐ LIKELY ACTIVE |
| NBNovozymes BioAg Inc - Milwaukee | Milwaukee | WI | Chemical Manufacturing325188 | 20-99 | ◐ LIKELY ACTIVE |
| PTPak Technologies - Good Hope | Milwaukee | WI | Paper Manufacturing322211 | 20-99 | ◐ LIKELY ACTIVE |
| DIDCS, Inc. | Milwaukee | WI | Chemical Manufacturing325130 | 20-99 | ◐ LIKELY ACTIVE |
Hentzen Coatings, Inc. Corporate | Milwaukee | WI | Chemical Manufacturing325510 | 100-499 | ◐ LIKELY ACTIVE |
| HMHydrite Milwaukee MKE - 7300 Bradley | Milwaukee | WI | Chemical Manufacturing325180 | 20-99 | ◐ LIKELY ACTIVE |
| MMMaterion - Milwaukee | Milwaukee | WI | Chemical Manufacturing325180 | 100-499 | ◐ LIKELY ACTIVE |
| PTPak Technologies - 35th and Capital - Salt | Milwaukee | WI | Chemical Manufacturing325998 | 20-99 | ◐ LIKELY ACTIVE |
| PTPak Technologies - Townsend | Milwaukee | WI | Chemical Manufacturing325998 | 1-19 | ◐ LIKELY ACTIVE |
| VMVibrantz Minerals | Milwaukee | WI | Chemical Manufacturing325180 | 1-19 | ◐ LIKELY ACTIVE |