| 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 |
| GUGenova USA | Rensselaer | IN | — | ◇ UNVERIFIED |
| GPGeon Performance Solutions, LLC | Carson | CA | — | ◇ UNVERIFIED |
| GFGeorge Fischer Harvel LLC | Easton | PA | — | ◇ UNVERIFIED |
| GFGeorg Fischer Central Plastics | Shawnee | OK | — | ◇ UNVERIFIED |
| GFGeorg Fischer Central Plastics LLC. Pipe and Fabrication | Dallas | TX | — | ◇ UNVERIFIED |
| GFGeorg Fischer Harvell LLC | Bakersfield | CA | — | ◇ UNVERIFIED |
| GMGilmour Mfg Co/somerset | Somerset | PA | — | ◇ UNVERIFIED |
| GIGlasforms INC | Birmingham | AL | — | ◇ UNVERIFIED |
| GIGPH Irrigation | Anaheim | CA | — | ◇ UNVERIFIED |
| GIGranite Inliner, LLC | Romulus | MI | — | ◇ UNVERIFIED |
 Greene Manufacturing Technologies | Port Huron | MI | — | ◇ UNVERIFIED |
| GTGreen Toes Grp & Coatings, INC. | National City | CA | — | ◇ UNVERIFIED |
| GWGulf Wandes | Baton Rouge | LA | — | ◇ UNVERIFIED |
| HIHancor INC | Bakersfield | CA | — | ◇ UNVERIFIED |
| HIHancor INC | Sebring | FL | — | ◇ UNVERIFIED |
| HIHancor, INC. | North Springfield | VT | — | ◇ UNVERIFIED |
| HPHarvel Plastics INC | Bakersfield | CA | — | ◇ UNVERIFIED |
| HDHaviland Drainage Products CO. | Knox | PA | — | ◇ UNVERIFIED |
| HPHeritage Plastics South INC | Tampa | FL | — | ◇ UNVERIFIED |
| HPHeritage Plastics West INC | Milford | UT | — | ◇ UNVERIFIED |
| HPHeritage Products Group | Garden City | KS | — | ◇ UNVERIFIED |
| HCHitco Carbon Composites INC. | Gardena | CA | — | ◇ UNVERIFIED |
| HCHoosier Custom Plastics LLC | Knox | IN | — | ◇ UNVERIFIED |
| HCHormigonera Contruxa | Coto Laurel | PR | — | ◇ UNVERIFIED |
| HFHuntington Foam LLC | Radford | VA | — | ◇ UNVERIFIED |
 Huntsman Building Solutions (usa) LLC | Corona | CA | — | ◇ UNVERIFIED |
| HSHydro Systems INC | Valencia | CA | — | ◇ UNVERIFIED |
| ILImplus LLC | Carlsbad | CA | — | ◇ UNVERIFIED |
| IFIndustrial Fiberglass Specialties, INC (0857043336) | Dayton | OH | — | ◇ UNVERIFIED |
| IPInfra Pipe Solutions USA LLC | Jacksonville | FL | — | ◇ UNVERIFIED |
| ISInfrastructure Supply Solutions | Canton | MA | — | ◇ UNVERIFIED |
| ITInsituform Technologies INC | San Jose | CA | — | ◇ UNVERIFIED |
| ITInsituform Technologies INC | Benicia | CA | — | ◇ UNVERIFIED |
| ITInsituform Technologies, INC. | Bessemer | AL | — | ◇ UNVERIFIED |
| ITInsituform Technologies LLC | Chesterfield | MO | — | ◇ UNVERIFIED |
| ITInsituform Technologies, LLC | Ocala | FL | — | ◇ UNVERIFIED |
| IIIpex Industrial Incorporated | Pineville | NC | — | ◇ UNVERIFIED |
| IUIpex USA LLC | Lodi | CA | — | ◇ UNVERIFIED |
| IUIpex USA LLC | Garden City | KS | — | ◇ UNVERIFIED |
| IUIpex USA LLC | Madison | AL | — | ◇ UNVERIFIED |
| IIIsco Industries LLC | Martinsburg | WV | — | ◇ UNVERIFIED |
| JEJdr Enterprises, INC | Madison | GA | — | ◇ UNVERIFIED |
| JMJ M Eagle | Wharton | TX | — | ◇ UNVERIFIED |
| JEJm Eagle | Creedmoor | NC | — | ◇ UNVERIFIED |
| JEJm Eagle | Buckhannon | WV | — | ◇ UNVERIFIED |
| JEJm Eagle | Wilton | IA | — | ◇ UNVERIFIED |
| JEJm Eagle | Sunnyside | WA | — | ◇ UNVERIFIED |
| JEJm Eagle Tacoma | Tacoma | WA | — | ◇ UNVERIFIED |
| JMJ-m Manufacturing Co., INC. Dba Jm Eagle | Pueblo West | CO | — | ◇ UNVERIFIED |
| JMJ-m Manufacturing CO INC Dba J-m Pipe Mfg Company | Fontana | CA | — | ◇ UNVERIFIED |
