Manufacturer Directory
Use company names, capabilities, certifications, NAICS codes, and location filters to narrow qualified suppliers faster.
Search by company name, process, material, product, equipment, or capability.
Showing 1941-1960 of 2554 results
MD
RFID Ready is an OEM and developer of automated, sensor-based RFID tracking systems. It manufactures and resells RFID tags, readers, antennas, portals, enclosures, components, handheld scanning equipment, and software applications, while providing RFID deployment, integration, consultancy, and support for manufacturing, healthcare, government, supply chain, data center, pharmaceutical, food, and personnel-tracking markets.
Founded in Baltimore in 1991 by Ron Hoff, RGH Enterprises remanufactures laser-printer toner cartridges and provides office products and related business solutions. The company remains rooted in Baltimore City, where Hoff owns the building that houses RGH alongside other small local businesses. RGH’s community focus includes its participation in Baltimore’s Live Near Your Work program since 2000 and its HUBZone certification.
Founded in June 2018, Edgewood’s RHS Precision is a small Maryland machine shop making CNC-machined components to tolerances as tight as 0.0002 inch. The ITAR-registered company handles work from prototype through production, with machining performed on-site and experience serving demanding aerospace, medical, and communications applications. Its team brings more than three decades of combined machining experience to projects ranging from small parts to larger jobs.
Founded in Arlington, Texas, in 1975 by chemist Dr. Paul J. Ricca, RICCA Chemical Company manufactures ready-to-use laboratory chemicals, analytical solutions and standards, including custom blends made to customer specifications. The company now operates three U.S. manufacturing locations and supports its products with ISO 9001:2015-certified facilities, ISO 17025-accredited laboratories and ISO 17034-accredited reference-material production.
Richfield Farm is a Manchester, Maryland farm known for connecting its harvest directly with local households through a community-supported agriculture program. Members receive weekly boxes of fresh local produce, while the farm also serves area markets and professional kitchens.
Founded more than 60 years ago by George W. Gohlinghorst, Ridge Printing Corporation has grown from a four-person shop into a Baltimore-region printing company employing more than 45 people. The family business remains centered on commercial printing while handling direct mail, design and fulfillment under one roof. Its on-site mail house can take a project from printed piece through addressing, postage and distribution, and many customers have stayed with Ridge for more than 30 years.
Riot creates environmental graphics and large-format visual experiences that turn workplaces, venues, retail spaces, and event settings into branded environments. Operating as a business unit of ARC, the company combines custom fabrication and installation with a broad service-center network spanning more than 40 locations globally. Riot is also a nationally recognized Minority Business Enterprise, certified through the NMSDC and the Western Regional Minority Supplier Development Council.
Founded in 2020 by swim instructor Jose Gallagher, Rip Current Sports makes patented Dual Boards, a compact swim-training aid born from Gallagher’s work helping an adult student overcome a leg problem and learn to swim. The Maryland company also teaches swimmers and coaches through its IHM method, using the boards to develop balance, body position, and technique from beginner lessons through advanced training.
Rockville-based Rise Therapeutics develops oral immunotherapies that use synthetic biology to target dendritic cells and recalibrate immune responses in autoimmune disease and cancer. The clinical-stage company pairs its proprietary oral delivery platform with in-house clinical GMP manufacturing, taking candidates from discovery through human clinical validation. Its pipeline includes oral programs for ulcerative colitis, rheumatoid arthritis, and cancer.
Founded as a Baltimore family business in 1980, Riverside Printing produces printed materials and branded products for Maryland businesses and organizations. The company became formally incorporated in Pasadena in 1994 and is now run by second-generation owner Ryan Cole, who has expanded its original paper-printing focus to include signs, apparel and promotional products. Riverside is known for keeping a personal, local approach while supporting long-standing customers, including some served for more than 25 years.
From its Salisbury, Maryland base, Riverton Marketing and Printing helps organizations tell their stories through printed materials, promotional products, and brand design. The full-service team works directly with clients on projects ranging from marketing pieces to custom apparel and vehicle graphics, supporting both supplied artwork and in-house design. Its portfolio includes work for local businesses such as KSES, Authority Refrigeration, and Singh Operation Services.
RJ Uniform carries forward a Baltimore uniform-making tradition rooted in A. Jacobs and Sons, established in 1891, and F. and F. Uniform Company, founded in 1946 by World War II veterans Yale and Ralph Friedlander. The companies merged in 1957, and the resulting business now serves public-service agencies with uniforms, including custom-made military uniforms and agency-specific apparel.
RNC-CO Conveyance Company designs and manufactures bulk material-handling equipment, with a focus on en-masse chain conveyors, bulk-flow conveyors and bucket elevators. Serving operations across North and South America, the company combines decades of hands-on engineering, installation and maintenance experience with custom designs for facilities with demanding throughput or tight spatial constraints. Its bucket elevators can reach capacities of up to 60,000 bushels per hour, while its support extends from CAD development through retrofits and ongoing troubleshooting.
Founded in 2001, locally owned and operated Road Safety LLC provides traffic-control services and supplies from Glen Burnie, including an in-house Maryland-certified sign shop that fabricates and installs MUTCD-compliant signage. Serving Maryland and surrounding Mid-Atlantic states, the company combines Maintenance of Traffic work, smart work-zone support, and pavement-marking services with more than 75 years of combined management experience. Its certifications include MDOT MBE/SBE, Baltimore City WBE, and WMATA SBE status.
Founded by the Roberts family in Rockville, Maryland, in 1966, Roberts Oxygen Company remains an independent distributor serving customers across nine states. With 57 locations, the company is known for pairing regional availability with technical support for industrial and medical gas users, laboratories, and welding customers.
Chartered in Maryland in 1985, Robotic Technology Inc. is a Washington, D.C.-area technology company known for its work on intelligent vehicles and systems for public-sector and commercial clients. Since 2003, it has managed the DARPA-sponsored Intelligent Vehicle Technology Transfer Program, helping move autonomous-vehicle research between defense and transportation communities.
Founded by Otto Roboz in 1953, Roboz Surgical Instrument Co. designs and supplies hand-finished surgical instruments and related equipment for biomedical and life-science research. Its catalog now spans more than 1,000 products, including fine micro-dissecting tools and Genuine Dumont forceps, used by healthcare and research professionals worldwide. Roboz also provides instrument care services such as color coding, extending a research-instrument specialty that has lasted more than six decades.
Known for preserving semiconductor supply after original manufacturers discontinue parts, Rochester Electronics is an authorized source serving equipment makers with long operating lives. From its Newburyport base, the company supports those customers with semiconductor manufacturing and replacement programs, including licensed production for obsolete devices. Its U.S. facilities span more than 245,000 square feet and are registered under ITAR.
Founded in Rochester in 1888, Rochester Midland Corporation manufactures specialty chemical products and provides technical programs for water treatment, food safety, and facility hygiene. From its early work with disinfecting fluids and liquid hand soap to a 70,000-square-foot Aurora, Illinois manufacturing and distribution facility, the company has grown into an international operation serving customers across North America and the UK. Its quality management system is ISO 9001:2015 certified.
Founded in 1987 by Master Blacksmith Clayton H. Miller, Rock Ridge Forge LLC is a family-owned Jarrettsville shop that designs and fabricates custom architectural and ornamental ironwork. The Miller family works with clients from drawings, photographs, or samples, creating pieces for residential and commercial settings and restoring older metalwork in a drive-in sandblasting bay. Son Logan joined the business as an apprentice after college, carrying the family’s blacksmithing tradition into its next generation.