Founded by Michael Day in 1981, Norton-based Michael Day Enterprises is an independent compounder of engineering thermoplastics for injection molding. With more than four decades in the plastics industry and over 150 years of combined team experience, the company develops standard and custom resin formulations, including recycled grades and closed-loop solutions. Its ISO 9001:2015-certified lab supports material testing and consistent production.
ISO 9001:2015
certification
Star PlasticsFrom its West Virginia base, Star Plastics compounds engineering-grade thermoplastics and develops custom-color and recycled-content resins for manufacturers. Founded in 1988, the company now operates five manufacturing locations with more than 745,000 square feet of production and office space, extending from North America to Shandong, China. An on-site analytical lab checks materials from incoming feedstock through final shipment, while designated facilities maintain ISO 9001-certified quality systems.MILLWOOD, WV
The Resin Enterprise, IncFounded in 1998, The Resin Enterprise, Inc. distributes and compounds engineering plastic resins for manufacturers tackling molding and extrusion challenges. The Malvern company pairs worldwide base-resin sourcing with specialty single- and twin-screw compounding, an in-house testing lab, and closed-loop recycling services. Its proprietary Temppeclear™ PPE resin is positioned as an alternative to polysulfone and PEI, while materials are supplied with a 30-day warranty and sourced from ISO- and QS-certified facilities.MALVERN, PA
RTP CompanyEstablished under the recycling-focused Miller Waste Mills umbrella in 1982, RTP Company is a privately owned specialty compounder that custom-engineers thermoplastics for demanding applications. From its Winona headquarters and more than 20 manufacturing locations worldwide, the company develops materials independently rather than promoting a single resin system, including compounds with post-industrial recycled content and formulations designed to reduce part weight. Its ISO 9001-registered facilities support customers from material selection through production, including private-label compounding.GAHANNA, OH
Newko PolymersFounded in 2009, Newko Polymers manufactures and distributes engineered thermoplastics and commodity resins from its 150,000-square-foot headquarters in Strongsville, Ohio. With more than 30 years of industry expertise, the company combines in-house formulation, manufacturing, laboratory testing, and distribution to tailor resin solutions while keeping lead times short. Newko also supports recycled-content materials and reclaim programs, extending its role beyond resin supply into plastics recovery and technical support.STRONGSVILLE, OH