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Founded in 1922, Royersford Spring Company manufactures seating components and suspension materials for the furniture and mass transportation industries. Its signature Dymetrol® seating-support fabric is used in applications ranging from custom furniture to rail and bus seating, while the company also manufactures custom hardwood frames and other seating components. The Royersford, Pennsylvania company is woman-owned and woman-led, WBENC-certified, and ISO 9001:2015 certified.
Since 1966, RPC Video has designed and installed audio-video systems for organizations across the Pittsburgh and Harrisburg markets. Its work ranges from television production and distance learning facilities to conferencing and medical technology, with engineering, training and ongoing support built into the project. RPC Video says some service relationships have continued for more than 15 years, reflecting a business shaped by referrals from existing customers.
Incorporated in 1985, RPM Industries LLC is a Washington, Pennsylvania manufacturer with more than 25 years of experience developing maintenance systems for heavy equipment. Its USA-made engine prelube and fluid evacuation equipment serves operators of heavy-duty diesel machinery across construction, mining, transportation and power generation, with installation and training available for customers.
RPS Composites, Inc. is a world leader in the design, manufacture, and service of high-performance composite piping systems, tanks, and vessels. The company provides engineered dual laminate and FRP pipe and tank solutions for corrosive fluid processing, handling, and storage applications. They support composite equipment throughout its lifecycle, from material selection through manufacturing, installation, and maintenance.
RPS Machinery Sales, Inc. fabricates structural steel and bridge components, including expansion joints and railings. With more than 35 years of industry experience, the company says it oversees projects from beginning to end and serves heavy-highway and municipal work.
RQ Resins is a Harrison City, Pennsylvania company focused on careful, responsible resin manufacturing. As part of Reacciones Quimicas®, it develops synthetic resins for coating applications, including the RANBAR® line, while placing particular emphasis on safety and environmental care.
Since 1985, RR USA Inc. has supplied North American customers with mechanical, hydraulic and electrical components, including gearboxes and complete packaged assemblies for industrial applications. A fully owned subsidiary of Italy’s Reggiana Riduttori, the company combines Italian-designed gear products made in Italy with U.S. assembly, stocking, engineering and repair support from its North American locations. Its in-house engineers work with customers and factory designers to adapt transmission solutions to demanding applications, including mining.
R.R. Donnelley & Sons Company, known as RRD, is a global provider of marketing, packaging, print, and business services, with more than 160 years in business. It operates more than 175 locations in 30 countries and serves brands including 92% of the Fortune 100. Its work includes commercial printing and integrated packaging production alongside customer communications and marketing services.
RSI Metal Litho Greenville is an independent metal coater and decorator specializing in finishing tinplate and aluminum for customers that need flexible, customer-directed production. As a wholly owned Reynolds Services subsidiary, it combines coating and decorating services with the broader RSI metal-processing network, and in 2024 acquired the first Koenig & Bauer MetJET ONE in the United States.
RTD Embedded Technologies, Inc. designs and manufactures rugged, high-reliability embedded computer modules, mezzanines, and systems based on the PC104 form factor and related stackable specifications. The company specializes in stackable, modular embedded systems for military, industrial, and mission-critical applications.
Established in 1995, RTG Films converts and distributes flexible packaging films from its AIB-certified facility, including custom-sized rolls and contract slitting for manufacturers across North America. The Chalfont, Pennsylvania company keeps master rolls in-house and off-site to respond quickly, while also offering plant-based PLA film designed to break down within 90 days in industrial composting.
RTI Machine is a Franklin, Pennsylvania contract manufacturer machining both high-volume parts and large, complex components, with welding and assembly available as part of the job. Established as Time Machine by the Latchaw family in the early 1980s, the shop joined local family business Roser Group in October 2025 and continues with its experienced team. Its 60,000-square-foot manufacturing floor also supports TMCO Tools, a tooling line developed from the shop’s own manufacturing needs.
RTI Machine is a Franklin, Pennsylvania contract manufacturer that machines both high-volume parts and large, complex components, with welding and assembly available for complete projects. Formerly Time Machine, the shop traces its roots to the Latchaw family’s early-1980s operation and joined the local, family-run Roser Group on October 31, 2025. Its 60,000-square-foot manufacturing floor supports work ranging from one-off components to repeat production, while its in-house TMCO Tools line grew from tooling the shop developed for its own needs.
Philadelphia-area medical device company RTM Vital Signs develops wearable and implantable systems that continuously monitor respiratory and cardiac health in real time. Its AI-driven RTMsense respiratory system received FDA 510(k) clearance in 2025, while the company’s cardiac monitoring technology is supported by 13 issued patents. Founded by executives Nance Dicciani and Denise Devine alongside anesthesiologist and medical-device inventor Dr. Jeff Joseph, RTM also received first prize for innovation at the 2023 American Society of Anesthesiology Conference.
RTX is an aerospace and defense company that designs, manufactures and supports technologies for flight and national security through Collins Aerospace, Pratt & Whitney and Raytheon. Its businesses make aircraft engines and auxiliary power units, as well as integrated aerospace and defense systems; RTX also describes work in advanced materials, propulsion and manufacturing technologies.
Founded by biomedical engineer Sanna Gaspard during her doctoral work at Carnegie Mellon, Pittsburgh-based Rubitection develops an AI-powered assessment and care-coordination platform for skin and vascular health. Its Rubitect system pairs a handheld measurement device with software that helps caregivers and clinicians identify risk, track changes and personalize care, including for conditions that can be harder to assess visually on darker skin tones. The company’s team combines healthcare, medical-device commercialization and clinical data expertise.
Since 2007, Rubystick has been the original global source for its specialized cleaning swabs, serving operators who maintain high-end printing equipment and other hard-to-reach technology. The Shillington, Pennsylvania company is known for soft, lint-free polyurethane tips designed to clean sensitive areas without leaving cotton strands behind.
Headquartered in Pennsylvania, Ruisen Special Steel supplies corrosion- and heat-resistant alloy materials for demanding industrial work, with a global network and at least 10,000 metric tons of inventory maintained at all times. Its international team of metallurgy and materials-science specialists supports customers with tailored alloy solutions, precision processing, and worldwide delivery.
Rumin8 develops patented feed and water additives that reduce methane emissions from beef and dairy cattle by reproducing a naturally occurring anti-methanogenic compound. The agriculture-focused climate technology company is built around a decade of research into a seaweed-derived solution, with formulations designed for production systems ranging from grain-fed operations to grass-fed cattle. A newly opened demonstration production plant is helping Rumin8 move its approach from scientific development toward scalable supply.
Founded by veteran medical device executive Jeff F. O’Donnell Sr., Runway Healthcare is a Malvern, Pennsylvania venture studio that helps doctors and entrepreneurs turn early-stage MedTech ideas into commercial companies. Its industry-veteran team combines investment with hands-on company building, taking promising medical technologies toward regulatory clearance and strategic acquisition.