Rockopolis is a U.S. specialty materials company known for precision resizing and screening of lightweight aggregate. Based in Ashtabula, Ohio, it tailors tightly controlled gradations for engineered applications where consistent particle size matters.
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
Spex•Lite® FillersSpex•Lite® Fillers manufactures and supplies lightweight fillers, resin extenders, aggregates, and specialty particles for formulated systems. Its product range includes expanded polypropylene, expanded polystyrene, recycled fillers, microballoons, alumina, mineral-based products, and other lightweight materials used in concrete, composites, coatings, roofing, GFRC, stone veneer, medical bags, furniture, bean bags, and shooting bags.WESTLAKE, OH
Advanced Cryogenic Enterprises IncAdvanced Cryogenic Enterprises has spent nearly 20 years reducing rubber, specialty plastics, and other materials to precise particle sizes through ambient and liquid-nitrogen-assisted grinding. Employee-owned and operated, ACE has grown from a 3,000-square-foot pilot plant opened in 2008 to two locations totaling 75,000 square feet. The Akron company works from small laboratory trials through multiple truckloads per week and also makes ACE-CAL moisture-control products for rubber manufacturing.AKRON, OH
SusMaXSpun out of Drexel University, Philadelphia-based SusMaX converts off-spec coal ash into lightweight aggregate for construction through a patented thermochemical process. Its SPORA material is made from recycled waste coal ash and is intended to reduce landfill diversion and reliance on quarried aggregate, with applications including lightweight concrete and masonry products.327992PHILADELPHIA, PA