| TTTeknor Thermoplastic Elastomers, Inc | Henderson | KY | Chemical Manufacturing325991 | 20-99 | ◐ LIKELY ACTIVE |
| TPTicona Polymers, Inc. | Evansville | IN | Chemical Manufacturing325991 | 100-499 | ◐ LIKELY ACTIVE |
| TBTosoh Bioscience, LLC, KOP | King of Prussia | PA | Chemical Manufacturing325991 | 20-99 | ◐ LIKELY ACTIVE |
| TCTpm Ca-hb | Huntington Beach | CA | Chemical Manufacturing325991 | 1-19 | ◐ LIKELY ACTIVE |
| TCTpm Ca-rd | Rancho Dominguez | CA | Chemical Manufacturing325991 | 20-99 | ◐ LIKELY ACTIVE |
| TCTPM Clinton | Clinton | TN | Chemical Manufacturing325991 | 100-499 | ◐ LIKELY ACTIVE |
| TETPM Elk Grove | Elk Grove Village | IL | Chemical Manufacturing325991 | 20-99 | ◐ LIKELY ACTIVE |
| TKTPM Kansas | Wichita | KS | Chemical Manufacturing325991 | 20-99 | ◐ LIKELY ACTIVE |
| TKTPM Kimberly Park | Dalton | GA | Chemical Manufacturing325991 | 20-99 | ◐ LIKELY ACTIVE |
| WPWashington Penn - LaFayette | La Fayette | GA | Chemical Manufacturing325991 | 100-499 | ◐ LIKELY ACTIVE |
| WPWashington Penn - LaFayette | LaFayette | GA | Chemical Manufacturing325991 | 100-499 | ◐ LIKELY ACTIVE |
| WPWashington Penn - PPD | Eighty Four | PA | Chemical Manufacturing325991 | 20-99 | ◐ LIKELY ACTIVE |
| WPWashington Penn - V-BAT | Washington | PA | Chemical Manufacturing325991 | 20-99 | ◐ LIKELY ACTIVE |
| WPWashington Penn - WAPA | Wapakoneta | OH | Chemical Manufacturing325991 | 20-99 | ◐ LIKELY ACTIVE |
| WCWestlake Compounds Madison, LLC | Madison | MS | Chemical Manufacturing325991 | 20-99 | ◐ LIKELY ACTIVE |
| WMWest Michigan Compounding - BDB | Greenville | MI | Chemical Manufacturing325991 | 20-99 | ◐ LIKELY ACTIVE |
| WPWhitefield Plastics, Division of Mearthane Products, LLC | Houston | TX | Chemical Manufacturing325991 | 20-99 | ◐ LIKELY ACTIVE |
| WPWinchester Poly Ops | Winchester | VA | Chemical Manufacturing325991 | 100-499 | ◐ LIKELY ACTIVE |
| WBWoa Builders, INC. | Carlsbad | CA | Chemical Manufacturing325991 | — | ◐ LIKELY ACTIVE |