| APAdvanced Plastic CORP | Lincolnwood | IL | 100–499 | ● ACTIVE |
| ACAmerican Casting and Manufacturing Corporation | Plainview | NY | 20–99 | ● ACTIVE |
Bunting Bearings LLC | Holland | OH | — | ● ACTIVE |
Centek Industries, INC. | Thomasville | GA | 20–99 | ● ACTIVE |
C-k Composites Co., LLC | Mount Pleasant | PA | — | ● ACTIVE |
Finger Lakes Extrusion CORP. | Canandaigua | NY | 20–99 | ● ACTIVE |
Formed Plastics INC | Carle Place | NY | 20–99 | ● ACTIVE |
Inpro CORP | Muskego | WI | 500+ | ● ACTIVE |
Ironwood Plastics, INC. | Ironwood | MI | 20–99 | ● ACTIVE |
Nammo Composite Solutions, LLC | Salt Lake City | UT | 20–99 | ● ACTIVE |
Pexco LLC | Athol | MA | — | ● ACTIVE |
Plastek Manufacturing, INC. | Brea | CA | — | ● ACTIVE |
Polyjohn Enterprises, LLC | Whiting | IN | — | ● ACTIVE |
| RPReo Plastics, INC. | Maple Grove | MN | 100–499 | ● ACTIVE |
| SESumitomo Electric Interconnect Products, INC. | San Marcos | CA | 100–499 | ● ACTIVE |
Vidon Plastics, INC. | Lapeer | MI | 20–99 | ● ACTIVE |
| AMAltamira Material Solutions, LP | Houston | TX | — | ● ACTIVE |
Carlisle Plastics Company | New Carlisle | OH | — | ● ACTIVE |
| CPColonial Plastics, INC. | Shelby Township | MI | 20–99 | ● ACTIVE |
Composite Technologies CO LLC | Dayton | OH | — | ● ACTIVE |
| CCCosmo Corporation | Cleveland | OH | 20–99 | ● ACTIVE |
| DJDorel Juvenile Group Incorporated | Columbus | IN | 500+ | ● ACTIVE |
Drake Plastics, LTD CO. | Cypress | TX | — | ● ACTIVE |
Dupont Specialty Products Usa, LLC | Newark | DE | — | ● ACTIVE |
| EPEngineered Profiles LLC | Columbus | OH | 100–499 | ● ACTIVE |
Extrudex Limited Partnership | Painesville | OH | — | ● ACTIVE |
Granger Plastics CO | Middletown | OH | — | ● ACTIVE |
| HIHarrington Industrial Plastics LLC | Chino | CA | — | ● ACTIVE |
| IUIpex USA LLC | Pineville | NC | 100–499 | ● ACTIVE |
Jifram Extrusions, INC. | Sheboygan Falls | WI | — | ● ACTIVE |
Kaso Plastics, INC | Vancouver | WA | 20–99 | ● ACTIVE |
Lumicor, INC. | Renton | WA | — | ● ACTIVE |
Newage Industries INC | Southampton | PA | — | ● ACTIVE |
Norco Plastics, INC | Chino | CA | — | ● ACTIVE |
Omico INC | Owensboro | KY | — | ● ACTIVE |
Pacific Corrugated Pipe Company LLC | Fontana | CA | — | ● ACTIVE |
Pexco Aerospace, INC. | Union Gap | WA | — | ● ACTIVE |
Piedmont Composites & Tooling LLC | Taylorsville | NC | — | ● ACTIVE |
| PTPiping Technology & Products INC | Houston | TX | 500+ | ● ACTIVE |
Polyfab Corporation | Reading | PA | — | ● ACTIVE |
Polygon Company | Walkerton | IN | — | ● ACTIVE |
| PEPort Erie Plastics, INC. | Harborcreek | PA | 100–499 | ● ACTIVE |
| PDPrecision Dynamics Corporation | Valencia | CA | — | ● ACTIVE |
| PPProfessional Plastics, INC. | Fullerton | CA | — | ● ACTIVE |
Rapid Accu-form, INC | Benicia | CA | — | ● ACTIVE |
Safariland LLC | Jacksonville | FL | — | ● ACTIVE |
Sinclair & Rush, INC. | Arnold | MO | — | ● ACTIVE |
Spartech LLC | Goodyear | AZ | 20–99 | ● ACTIVE |
Streamline Plastics, INC. | Ogden | UT | — | ● ACTIVE |
Takahata Precision Tennessee, INC | Helenwood | TN | — | ● ACTIVE |
Thermacor Process INC | Fort Worth | TX | — | ● ACTIVE |
Thermofab Operating CO LLC | Shirley | MA | — | ● ACTIVE |
Ultratech International, INC | Jacksonville | FL | — | ● ACTIVE |
United Fiberglass INC | Amarillo | TX | — | ● ACTIVE |
| WPWestec Plastics CORP. | Livermore | CA | 20–99 | ● ACTIVE |
Advanced Composites, INC. | Salt Lake City | UT | — | ● ACTIVE |
Advanced Drainage Systems INC | Hilliard | OH | — | ● ACTIVE |
Autana Composites, LLC | Milwaukee | WI | — | ● ACTIVE |
Bulldog Pipe LLC | Collinsville | OK | — | ● ACTIVE |
Cantex INC | Fort Worth | TX | — | ● ACTIVE |
Central California Fluid System Technologies | Camarillo | CA | — | ● ACTIVE |
Central California Fluid System Technologies | San Diego | CA | — | ● ACTIVE |
Coax LLC | Brandon | MS | — | ● ACTIVE |
Consolidated Pipe & Supply Company, INC. | Fairfield | ID | — | ● ACTIVE |
Cpk Manufacturing, LLC | Augusta | ME | — | ● ACTIVE |
Dp Shultz INC | Abbottstown | PA | — | ● ACTIVE |
| EIEarthwise Industries | Troy | MO | 20–99 | ● ACTIVE |
Econocraft Materials LLC | Scottsdale | AZ | — | ● ACTIVE |
Eldon James CORP | Fort Collins | CO | — | ● ACTIVE |
Foothills Products INC | Evergreen | CO | — | ● ACTIVE |
Fullerform Systems, INC | Phoenix | AZ | — | ● ACTIVE |
Grayline LLC | Waukesha | WI | — | ● ACTIVE |
| HIHarrington Industrial Plastics LLC | Orlando | FL | — | ● ACTIVE |
| HIHarrington Industrial Plastics LLC | San Diego | CA | — | ● ACTIVE |
| HIHarrington Industrial Plastics LLC | Kapolei | HI | — | ● ACTIVE |
| HIHarrington Industrial Plastics LLC | Cranberry Township | PA | — | ● ACTIVE |
Harrington Industrial Plastics LLC | Van Nuys | CA | — | ● ACTIVE |
| HIHarrington Industrial Plastics LLC | Seattle | WA | — | ● ACTIVE |
| HIHarrington Industrial Plastics LLC | Riverside | CA | — | ● ACTIVE |
| HIHarrington Industrial Plastics LLC | Cleveland | OH | — | ● ACTIVE |
| HIHarrington Industrial Plastics LLC | Las Vegas | NV | — | ● ACTIVE |
| HIHarrington Industrial Plastics LLC | Livonia | MI | — | ● ACTIVE |
| HIHarrington Industrial Plastics LLC | Woodridge | IL | — | ● ACTIVE |
| HIHarrington Industrial Plastics LLC | Tucson | AZ | — | ● ACTIVE |
| HIHarrington Industrial Plastics LLC | Jacksonville | FL | — | ● ACTIVE |
Harrington Industrial Plastics LLC | Salt Lake City | UT | — | ● ACTIVE |
Harrington Industrial Plastics LLC | Fort Lauderdale | FL | — | ● ACTIVE |
| HIHarrington Industrial Plastics LLC | Anaheim | CA | — | ● ACTIVE |
Harrington Industrial Plastics LLC | Santa Fe Springs | CA | — | ● ACTIVE |
Harrington Industrial Plastics, LLC | Austin | TX | — | ● ACTIVE |
Hd Fowler Company | Bellevue | WA | — | ● ACTIVE |
Helmy, Associates & Co., INC. | San Antonio | TX | — | ● ACTIVE |
Industrial Plastic Supply, INC. | Anaheim | CA | — | ● ACTIVE |
| ICInplex Custom Extruders LLC | Naperville | IL | 20–99 | ● ACTIVE |
Isco Industries, INC. | Louisville | KY | — | ● ACTIVE |
Kt Plastics INC | Calera | OK | — | ● ACTIVE |
Micromold Products, INC. | Yonkers | NY | — | ● ACTIVE |
| NANational Aerospace Supply CO | San Juan Capistrano | CA | — | ● ACTIVE |
Northwest Pipe Fittings, INC. | Billings | MT | — | ● ACTIVE |
| PLPhantom Laboratory | Greenwich | NY | 20–99 | ● ACTIVE |