| CCClark County Water Reclamation District Project #668 | Las Vegas | NV | — | ◇ UNVERIFIED |
| CSClayens Santa Maria, LLC | Santa Maria | CA | — | ◇ UNVERIFIED |
| CTC&L Tiling, Inc. | Timewell | IL | — | ◇ UNVERIFIED |
| CTC&L Tiling, Inc. | Timewell | IL | — | ◇ UNVERIFIED |
| CMCommand Medical Products, Inc. | Ormond Beach | FL | — | ◇ UNVERIFIED |
| CUComposites USA INC | Bay View | MD | — | ◇ UNVERIFIED |
| CCContainer Components INC | San Fernando | CA | — | ◇ UNVERIFIED |
| CCContech Construction Products | Springfield | IL | — | ◇ UNVERIFIED |
| CIContinental Industries - Broken Arrow Facility | Broken Arrow | OK | — | ◇ UNVERIFIED |
| CBCook Brothers Insulation INC | Kansas City | MO | — | ◇ UNVERIFIED |
| CTCoro Tech CO. | Grandville | MI | — | ◇ UNVERIFIED |
| CPCortrol Process Systems, INC. | Tulsa | OK | — | ◇ UNVERIFIED |
| CRCrane Resistoflex Plastic Lined Piping Products | Bay City | MI | — | ◇ UNVERIFIED |
| CPCrumpler Plastic Pipe, INC. | Roseboro | NC | — | ◇ UNVERIFIED |
| CPCustom Pipe & Fabrication, INC | Stanton | CA | — | ◇ UNVERIFIED |
| DCDaniel Company - Adelanto | Adelanto | CA | — | ◇ UNVERIFIED |
| DIDat Industries LLC | Huntsville | TX | — | ◇ UNVERIFIED |
| DIDawn Industries, INC. | Arvada | CO | — | ◇ UNVERIFIED |
| DIDeepflex INC. | Houston | TX | — | ◇ UNVERIFIED |
| DFDiamond Fiberglass Northwest | Burlington | WA | — | ◇ UNVERIFIED |
| DPDiamond Plastics CORP | Casa Grande | AZ | — | ◇ UNVERIFIED |
| DPDiamond Plastics Corporation | Muncie | IN | — | ◇ UNVERIFIED |
| DJD & J International, INC. | Hayward | CA | — | ◇ UNVERIFIED |
| DDura-line | Sparks | NV | — | ◇ UNVERIFIED |
| DDura-line | Evansville | WY | — | ◇ UNVERIFIED |
| DCDura-line CORP | Sandersville | GA | — | ◇ UNVERIFIED |
| DTDy-na Tool & Mold | Grand Island | NE | — | ◇ UNVERIFIED |
| ECEast Coast Plastics | West Berlin | NJ | — | ◇ UNVERIFIED |
| ESElastomer Specialties INC | Broken Arrow | OK | — | ◇ UNVERIFIED |
| EIEndot Industries, LLC | Greeneville | TN | — | ◇ UNVERIFIED |
| EPEndurance Poly Producers, LLC | Tennille | GA | — | ◇ UNVERIFIED |
| EBErshigs Biloxi, INC. | Biloxi | MS | — | ◇ UNVERIFIED |
| EIErshigs, INC. | Bellingham | WA | — | ◇ UNVERIFIED |
| EEExcalibur Extrusions | Placentia | CA | — | ◇ UNVERIFIED |
| FIFerguson Industrial Facility 2740 | La Porte | TX | — | ◇ UNVERIFIED |
| FIFiberglass Innovations LLC | Rockford | IL | — | ◇ UNVERIFIED |
| FGFiber Glass Systems Wichita | Wichita | KS | — | ◇ UNVERIFIED |
| FPFibra-form Products INC | Rogers | MN | — | ◇ UNVERIFIED |
| FTFlexible Technologies | Pico Rivera | CA | — | ◇ UNVERIFIED |
| FRFlexpipe Rockwall | Rockwall | TX | — | ◇ UNVERIFIED |
| FWFlying W Plastics Fl, INC. | Jacksonville | FL | — | ◇ UNVERIFIED |
| FAFranklin Acquisition, LLC | Compton | CA | — | ◇ UNVERIFIED |
| FIFratco INC | Francesville | IN | — | ◇ UNVERIFIED |
| FIFratco, INC. | Saint Anne | IL | — | ◇ UNVERIFIED |
| FPFuture Pipe Industries, INC. | Gulfport | MS | — | ◇ UNVERIFIED |
| GIG.e.f. INC. | Winfield | WV | — | ◇ UNVERIFIED |
| GAGeneral Atomics Ems Systems, Iuka Facility | Iuka | MS | — | ◇ UNVERIFIED |
 General Rubber and Plastics Company INC | Lexington | KY | — | ◇ UNVERIFIED |
| GPGeneva Polymer Products | Boulder City | NV | — | ◇ UNVERIFIED |
| GPGenova Products INC | Paducah | KY | — | ◇ UNVERIFIED |
