Spex•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.
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JSPJSP manufactures polymer-based materials and products, including expanded polymer materials, sheets and boards, for customers in major industrial centres across the Americas, Europe and Asia. Its research, development and manufacturing facilities support ongoing development of applications, with products used in areas such as automotive safety and transport packaging. The company describes a history of developing proprietary foaming technologies and products, including expanded polyethylene sheet and polypropylene beads.BUTLER, PA
RockopolisRockopolis 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.ASHTABULA, 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
Elastizell SystemsSecond-generation and family-owned, Elastizell Systems has spent more than 65 years building its name around lightweight cellular concrete work. Based in Ohio and serving projects across the United States, the company mixes material on site with mobile batch plants, helping engineers and contractors address difficult ground conditions without relying on conventional heavy fill.MORAINE, OH