- Signature USA
- Simco
- SIPA North America
- Sirtec North America LTD
- Sirtec North America LTD
- Snap Edge Corp
- Solvay Engineered Polymers
- Sparta Manufacturing Div
- Spartech Polycom
- Specialty Plastics Fabricators
- Specialty Plastics Inc
- Sshh Inc
- St Clair Plastics
- Step 2 Co
- Sulfo Technologies
- Sulfo Technologies
- Sumitomo Plastics America Inc
- Sundance Products
- Superbag Corp
- Syfan Manufacturing
- Syfan USA
- Systex Products Arkansas Corp
- T O Plastics Inc
- Tafco Polymers
- Tandem Group Inc
- Tayloreel Corp
- Tec Systems Inc
- Temkin Plastics
- Tenneco Packaging
- Tessy Plastics
- Thermo-Serv
- Thermoplastic Division
- Thomson Plastics Inc
- Titan Plastics Group
- Titan Plastics Inc
- Transparent Office Products
- Travel Star Products
- Tri-Ex Composites Inc
- Triangle Plastics Inc
- Tru-Vision Plastics Inc
- Tull Plastics Inc
- Tupperware Four Seasons Ents
- Ultra-Poly Inc
- Ultratec Products Inc
- United Plastic Processes
- United States Plastic Corp
- Universal Precision Plastics
- Unlimited Plastic Tchnlgs Inc
- Upax Industries Inc
- Us 1 Com Inc
- US Poly Co
- USA/Peg
- USA/Peg
- V & E Components
- Vay Co
- Vesta Polymers
- Victrex USA Inc
- Viz Plastic Products LTD
- Vortex Plastic Co
- W L Plastics
- Walker Tool & Mold Inc
- WCT Fluoropolymers
- Webster Bes-Pak & Co
- West Coast Packaging
- Westco Products
- Wester Container
- Western Industrialplasticsinc
- Western Industrialplasticsinc
- Williams Plastic Products Corp
- Wingert Sales & Svc
- Winkelman Sales
- Wipco Wholesale Industrial Co
- Wonder Industries Inc
- WOW Plastics Inc
- WOW Plastics Inc
- Wright Plastic Products
- Wy'East Industries Inc
- Yoshi Ware Co
- Younker Products Co USA
- Zan Plastics
- Zeit Co Inc