Founded in Detroit in 1968, RheTech develops and manufactures engineered thermoplastic compounds, including reinforced polypropylene, engineered resins and color concentrates. The company moved to Whitmore Lake in the 1970s and now combines application-focused engineering with a technical center and an ISO 17025-accredited testing laboratory. Its materials are used extensively in automotive applications, while its RheVision line incorporates bio-fibers into polyolefin compounds.
ISO/IEC 17025 accreditation
ISO 9001 registration
Registration
QS9000 registration
Registration
ISO17025
Quality certification
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
Michael Day Enterprises, LLCFounded 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.NORTON, OH
Rauh Polymers, IncFor more than 40 years, Akron-based Rauh Polymers has custom-compounded engineering-grade resins, including its proprietary PermaFlex®, Optimum® and ElectraFlex® lines, for demanding manufacturing applications. Its in-house laboratory and technical team help customers match and customize materials, while production and sourcing remain in the USA. The privately held company is ISO 9001:2015 certified and distributes its materials globally.AKRON, OH
Adell Plastics, IncFounded in 1957, Adell Plastics is an independent American compounder known for decades of process experience and customer-specific formulation work. Its three facilities serve manufacturers whose materials go into fields such as automotive and medical production, while an ISO/IEC 17025-accredited quality laboratory supports the company’s process control.BALTIMORE, MD