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For 35 years, Protective Packaging Solutions has designed and manufactured custom protective packaging, from precision foam cushioning to cases for sensitive equipment. Its in-house design team can turn a concept into a CAD model, prototype and validated production solution, while the company’s Denver and Cincinnati facilities support shipping across the lower 48 states and Northern Mexico. PPS also manages kitting, assembly and delivery, giving customers one source from initial design through final shipment.
ProtectoPlas manufactures chemical-resistant storage and mixing tanks, including custom systems for industrial and process applications. Family-owned since 1973, the Streetsboro company brings more than 50 years in the chemical tank and blending industry to projects that can include equipment integration, process controls, and installation support. Its BleachGuard™ system is specifically designed for double-containment sodium hypochlorite storage and carries a five-year warranty.
Founded in 2018 by protein-purification experts, Columbus-based Protein Capture Science develops and commercializes self-cleaving tag technologies for purifying proteins and protein fragments. Its patented iCapTag platform grew from more than 20 years of research by co-founder David W. Wood and his team at The Ohio State University, and is designed to carry projects from early discovery through research and manufacturing. The company also offers iCapMag magnetic beads for rapid purification of tagless proteins.
Proteus, Inc. turns scintillation materials into custom detector elements and high-precision imaging arrays, with designs ranging from conventional forms to demanding specialized configurations. The company is particularly suited to rapid prototypes and one-time projects, including detector work for balloon-borne, satellite, and deep-space missions and ruggedized designs for temperatures up to 175°C. Its production network also supports continuing commercial requirements through ISO 9000-certified manufacturing partners.
Founded in 2020 from James Rogers’s garage machine shop, Proto Dev and Fab develops medical devices and turns difficult design ideas into working prototypes. The company combines product-development and design-for-manufacturing guidance with hands-on fabrication, including prototype work such as the Project Spiritus rescue-ventilation device. Rogers brings experience as a machinist and design engineer, along with multiple granted and pending patents and a master’s degree in engineering.
With more than 50 years in the industry, Proto Plastics is a Tipp City, Ohio, contract manufacturer known for working closely with customers on demanding plastic parts. Its engineers support projects from early design through production, with particular experience in close-tolerance work and long-term customer relationships. Proto Plastics’ ISO 9001:2015-certified quality system supports programs where consistent conformance matters.
Founded in 2000, ProtoBox is a Dayton technology company known for supporting high-stakes aerospace and defense work with research-grade simulation systems. The certified Veteran-Owned Small Business draws on military training and real-world execution experience, with a cleared workforce serving government and commercial clients from concept through deployment.
Based in Franklin, Ohio, ProtoPack, LLC designs and manufactures custom corrugated packaging from prototype through production. Its in-house capabilities span structural design, digital prototyping and production, with contract packaging and kitting services that extend from assembly to fulfillment. ProtoPack serves the Ohio, Indiana and Kentucky tristate region and operates as an ISO 9001:2015-certified packaging partner.
Founded in 1994 as a scrap-metal trading business, ProTrade Steel has grown into a fully integrated company that brokers, processes, transports and exports ferrous and nonferrous scrap. Its Eastern U.S. operation combines four trading offices, two RJ Recycling facilities and a transportation division with more than 300 private railcars, connecting suppliers with domestic mills, foundries and buyers around the world. In 2025, ProTrade transferred full ownership to its employees through an ESOP, adding a shared-ownership model to a business led by a second generation of the Kessick family.
From its Holland, Ohio operation, ProVeyance Group makes conveyor systems and components for package and material handling, while also providing custom tube fabrication through its Ashland and Woodsage companies. Woodsage’s ISO 9001:2015-certified manufacturing operation processes more than 3,000 miles of tubing annually and produces over one million steel tube parts each month. Ashland adds a distinctive systems capability, including its modular RigidPro and flexible ProFlex powered conveyors.
ProVia is a manufacturer of premium exterior building products, including entry doors, windows, siding, manufactured stone, and metal roofing. Founded in 1977 by Bill Mullet, the company has grown from a small aluminum window and door fabricator into a multi-facility operation with production across Ohio and Mississippi. ProVia combines old-world craftsmanship with state-of-the-art technology and is guided by a faith-based mission to serve by caring for details in ways others won’t. The company is a long-standing ENERGY STAR partner and has received multiple awards for energy efficiency and workplace safety.
Founded as Central Roller in 1986, Fairfield’s Provient manufactures custom industrial rollers and molded rubber components, building on a history that began with graphic arts rollers before expanding into broader manufacturing applications. The company added urethane capabilities in the 2000s, expanded its facility to 32,000 square feet in 2017, and now supports projects from roller refurbishment to custom molding and engineering design. Provient is ISO 9001:2015 certified and formerly operated as Cent-Roll Products.
ProWood manufactures and treats lumber, with pressure-treated lumber as its central offering for professional building projects. Its company information describes lumber made for builders, while its facility network produces and supplies a broader range of wood building materials.
ProWood manufactures and treats pressure-treated lumber for professional builders, emphasizing consistent performance and reliability. Its products are made for construction and outdoor projects, with treatment options intended for different applications and exposure conditions.
The nonprofit PRR T1 Steam Locomotive Trust is building Pennsylvania Railroad T1 No. 5550, a new example of the iconic 4-4-4-4 duplex steam locomotive class whose 52 original engines were all scrapped. Driven by volunteers, engineers, and supporters around the world, the Trust is recreating the art deco locomotive for mainline excursion service and plans to pursue a steam-locomotive speed record. The project also uses modern engineering and alternative-fuel research to explore how steam can remain part of railroad heritage.
Prunty Pitches specialises in constructing sports grounds, with projects including the Connacht GAA air dome and the GAA National Games Development Centre. The company focuses on research and new technology in pitch construction and has also worked on McGovern Park and Brewster Park for GAA organisations.
Formerly Pete Sudyk Trophies, PS Awards is a multi-generational, family-owned and operated awards business that has served customers for more than 58 years. The company has joined Bardach Awards and now operates under the Bardach Awards name.
Founded in 1969, Cleveland-based PSC is a subsidiary of C. A. Litzler Holding Company known for developing the industry-standard radio-frequency dryer used by fiberglass manufacturers worldwide. The company designs industrial heating and drying systems while using its laboratory to test new applications for manufacturers.
Founded in 1988 from a small garage, PSI Product Specialists manufactures and supplies pneumatic equipment for telecommunications while developing custom products and safety solutions for other industries. The woman-owned, family-founded company operates from an 80,000-square-foot Northeast Ohio facility and has expanded into made-in-the-USA PPE and arbOUR’s professional-grade, plant-based cleaning products. PSI is certified as a Women’s Business Enterprise through WBENC and holds minority certifications through the City of Cleveland, the Woman Minority Business Enterprise, and California Clearinghouse.
Founded in 1962, family-run PSK Steel & CNC Technology makes specialized tooling for metal extrusion, forging and pipe manufacturing from its Hubbard, Ohio facility. Its 120,000-square-foot operation combines CNC machining with one of the nation’s largest ready-stock inventories of H-13, D-2 and 4340 tool steel. PSK Steel is ISO 9001:2015 certified and serves customers nationally and internationally.