 Hentzen Coatings INC | Milwaukee | — | ● ACTIVE |
| KLKingchem Laboratories INC. | Saint Francis | 20–99 | ● ACTIVE |
 Milwaukee Composites, INC. | Cudahy | 100–499 | ● ACTIVE |
| MAMaterion Advanced Chemicals INC | Milwaukee | — | ● ACTIVE |
 Ppg Industries INC | Oak Creek | — | ● ACTIVE |
 Rbp Chemical Technology INC | Milwaukee | 20–99 | ● ACTIVE |
 Autana Composites, LLC | Milwaukee | — | ● ACTIVE |
 Milport Enterprises, INC. | Milwaukee | — | ● ACTIVE |
| RTRetham Technologies, INC. | Milwaukee | — | ● ACTIVE |
 Share Corporation | Milwaukee | — | ● ACTIVE |
| WOWatertech of America INC | Milwaukee | — | ● ACTIVE |
| HIHercules Incorporated - Milwaukee Plant | Milwaukee | 20–99 | ◐ LIKELY ACTIVE |
| Hentzen Coatings, INC. | Milwaukee | 20–99 | ◐ LIKELY ACTIVE |
| LILiphatech INC. | Milwaukee | 20–99 | ◐ LIKELY ACTIVE |
| MBMolecular Biology Resources INC | Milwaukee | 20–99 | ◐ LIKELY ACTIVE |
| PIPpg Industries INC - Oak Creek Facility | Oak Creek | — | ◐ LIKELY ACTIVE |
| TRTwinco Romax | Milwaukee | — | ◐ LIKELY ACTIVE |
| WTWpc Technologies INC | Oak Creek | 20–99 | ◐ LIKELY ACTIVE |
| ACAldrich Chemical Company, Inc.-teutonia | Milwaukee | — | ◇ UNVERIFIED |
| ALAthea Labs INC | Milwaukee | — | ◇ UNVERIFIED |
| CICommerce Indl Chemicals INC | Milwaukee | — | ◇ UNVERIFIED |
| HCHydrite Chemical CO | Milwaukee | — | ◇ UNVERIFIED |
| LMLucas Milhaupt INC | Cudahy | — | ◇ UNVERIFIED |
| RBR B P Chemical CORP | Milwaukee | — | ◇ UNVERIFIED |
| SMSolvox Mfg CO | Milwaukee | — | ◇ UNVERIFIED |
| TFThermo Fisher Scientific (milwaukee) LLC | Milwaukee | — | ◇ UNVERIFIED |
| CLCarma Labs, Airways | Franklin | 100–499 | ◐ LIKELY ACTIVE |
| MAMaterion Advanced Chemicals INC. | Milwaukee | — | ◐ LIKELY ACTIVE |
| NBNovozymes BioAg Inc - Milwaukee | Milwaukee | 20–99 | ◐ LIKELY ACTIVE |
| PTPak Technologies - Good Hope | Milwaukee | 20–99 | ◐ LIKELY ACTIVE |
| SISteelwind Industries | Oak Creek | 20–99 | ◐ LIKELY ACTIVE |
| ACAldrich Chemical CO INC | Milwaukee | — | ◇ UNVERIFIED |
| ACAldrich Chemical CO INC | Milwaukee | — | ◇ UNVERIFIED |
| ALAthea Labs, INC. | Milwaukee | — | ◇ UNVERIFIED |
| BABell Aromatics | Milwaukee | — | ◇ UNVERIFIED |
| BIBilsons Industries(formerly B & K Finishing) | Milwaukee | — | ◇ UNVERIFIED |
| BCBorden Chemical Incorporated | Oak Creek | — | ◇ UNVERIFIED |
| BIBostik INC | Wauwatosa | — | ◇ UNVERIFIED |
| CCClariant CORP - Oak Creek | Oak Creek | — | ◇ UNVERIFIED |
| DIDic Imaging Products USA INC | Oak Creek | — | ◇ UNVERIFIED |
| DCDynamic Color Solutions INC | Milwaukee | — | ◇ UNVERIFIED |
| ESElementis Specialties INC | Milwaukee | — | ◇ UNVERIFIED |
| ELElements Ltp INC | Milwaukee | — | ◇ UNVERIFIED |
| GLGreat Lakes Biochemical CO | Milwaukee | — | ◇ UNVERIFIED |
| HTHenkel Technologies | Oak Creek | — | ◇ UNVERIFIED |
| IIInx International Ink CO | Milwaukee | — | ◇ UNVERIFIED |
| PGPpg Gp LLC | Milwaukee | — | ◇ UNVERIFIED |
| PMPrince Minerals LLC | Milwaukee | — | ◇ UNVERIFIED |
| SPSolar Paints Varnish, Incorporated | Milwaukee | — | ◇ UNVERIFIED |
| WCWedor Chemical CORP | Milwaukee | — | ◇ UNVERIFIED |
