Manufacturer Directory
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MD
Mantaro Networks is a Germantown, Maryland engineering company known for carrying complex technology projects from early concept through production. Its professional engineers serve technology clients developing demanding electronic systems, with a particular strength in embedded product development and a turnkey manufacturing process governed by ISO 9001:2015.
Incorporated in Maryland in 1998, Manufacturing Support Industries (MSI) is a small Seaford, Delaware, manufacturer known for supporting demanding defense programs as an experienced government prime contractor. Its machinists and engineers help defense, aerospace, and commercial customers move from initial fabrication through final assembly, with ISO 9001:2015 certification and quality staff that include Certified Six Sigma Black Belts.
Since 1920, Maola Local Dairies has turned milk from nearby family farms into fresh dairy products for Mid-Atlantic communities. The Virginia-headquartered cooperative remains farmer-owned, with more than 1,000 employees processing milk at six production plants and producing about 2.4 billion glasses a year. Its farmer-led ownership connects local farms, processing, and community stewardship in one dairy operation.
Founded by Jason Smith and Keith Stressler in 2011, Maquette Fine Art Services built its reputation around exceptional service in the fine-art logistics field. The company has grown from four people and two trucks into a regional operation serving museums, galleries, and collectors across four locations, while retaining its founders’ emphasis on collaboration and client-focused work. Its sustainability efforts include reusable crating and a tree-planting partnership tied to every invoice.
More than a century of expertise defines Maquinaria GEKA S.L.U., a Spain-based manufacturer whose machines are designed, machined, welded and assembled at its own facility. GEKA serves structural-steel fabricators around the world through distributors in more than 60 countries, with additional customer support from its Maryland showroom. Its work centers on helping construction, energy and industrial manufacturers automate the processing of steel profiles.
A four-generation family business founded in 1914, Maranto Bakery is Baltimore’s oldest continuously operating bakery. Its traditional recipes and hearth ovens have made it a local institution, supplying fresh bread to more than 350 wholesale customers across six Maryland counties.
Founded in 1988 to develop stone-care products, MARBLELIFE® has grown into a surface-care company that manufactures its own products while restoring and maintaining marble and other hard surfaces. Its science-driven approach pairs root-cause analysis with a network of more than 50 North American franchise locations, serving residential, commercial and monumental properties. The company also operates a national training and research-and-development facility in Sanford, Florida.
As a member of the Salform, Inc. family, Marchant is a Connecticut manufacturer known for purpose-built metal-forming machinery. Its equipment helps sheet-metal users correct spring-back and shape parts for repair, experimental, and small-production work, with engineering support available for shrinking applications.
Founded in France by Innocent Marchante, family-owned MARCHANTE SAS designs and manufactures biaxial film-stretching lines for technical and specialty applications. The Montmélian company has worked in the biax industry since 1979, installing more than 200 lines worldwide and combining long-serving specialists with a newer generation of engineers. Its patented stretching technology and Innovation Centre support projects from machine design through commissioning, including lithium-ion battery separator film production.
Founded in 1968, Marlin Steel Wire Products makes custom-engineered wire and sheet-metal forms, with a particular focus on material-handling baskets for demanding industrial applications. Acquired by Drew Greenblatt in 1998, the Baltimore manufacturer moved from commodity bagel baskets to robotics-driven production and now operates in Indiana and Michigan as well as Maryland. Its engineering-led, U.S.-made work is backed by ISO 9001:2015/Amd.1:2024 and ISO 13485:2016 certification.
Mars Labs, LLC is a small engineering firm that has served automotive testing needs since 1999, with CEO and technical director Ernie Falcone personally shaping its data-acquisition work. Based in Laurel, Maryland, the company develops Titan systems and custom monitoring solutions for organizations conducting demanding vehicle and industrial tests.
Founded in 1938, Marsilli is an Italian manufacturer whose history began with stand-alone winding machines and has grown into more than 80 years of specialized automation know-how. Based in Castelleone, where it designs and makes nearly all of its machines, the company works with manufacturers that need customized winding and assembly systems for motors or coils.
Martha Spak is a public artist and designer who creates site-specific art and environmental graphics for civic, healthcare, and institutional spaces. Working through a collaborative studio practice, she develops durable, context-responsive installations ranging from sculpture and wall-based work to interpretive and wayfinding elements. Her projects include permanent navigation sculptures in Kirkland, Washington, and healthcare commissions for institutions such as the National Institutes of Health and the University of Michigan.
Martin Marietta Magnesia Specialties manufactures high-purity magnesium oxide, magnesium hydroxide, and dolomitic lime products. Its products serve environmental, industrial, chemical, agricultural, power-generation, water-treatment, glass, mining, pulp-and-paper, refractory, steelmaking, rubber, plastic, and other specialty applications.
Since 1980, Maryland Biochemical Company has specialized in bioaugmentation and biological solutions that help municipal and industrial wastewater treatment systems perform more reliably. The company develops microorganism cultures for challenges such as treatment upsets, variable waste streams and cold conditions, and backs them with on-site technical service, including microscopic exams and treatability studies. Its cultures are produced under an ISO-certified quality assurance program.
Since 1851, Maryland Brush Company has manufactured industrial brushes and rolls for steel mills, pairing them with engineering surveys and refurbishing services aimed at improving surface finish on coated strip lines. The company’s steel-mill work stands out for diagnosing the wider cleaning system rather than simply replacing worn brushes, and it also serves other industrial applications with custom brush designs. Maryland Brush maintains ISO 9001:2015 certification and has operated as an employee-owned company since 1990.
Founded around an artist-engineer’s blend of technical and creative work, Maryland CAD Solutions, LLC creates 3D CAD models, scans physical objects, and turns designs into printed parts. The company develops models from measured scan data or samples and offers both in-house SLA and FDM printing, making it a hands-on partner for moving from an existing object or concept to a finished digital or physical form.
Family-owned and operated for more than 90 years, Maryland Ceramic & Steatite Co., Inc. has manufactured custom industrial and technical ceramics in Bel Air since 1955. The company produces precision steatite and cordierite components for high-temperature applications, with on-site tooling and machining that supports both prototypes and production runs. Its porous engineering structures, made through a patented process with controlled pore size and distribution, add a distinctive specialty to its ceramic work.
Now in its fourth generation of family ownership, Maryland China Company carries on a porcelain tradition that began in 1910 with artist Phillip Weiner. The Reisterstown company is known for serving porcelain artists and commercial decorators with blank porcelain, decorating expertise and custom work, drawing on long-standing relationships with overseas factories and its own Maryland decorating department.
Maryland Integrated Systems Inc. builds wiring interconnect products and cable harnesses for military, aerospace and defense applications from its Salisbury, Maryland operation. The small business supports all branches of the U.S. military and major prime contractors with rapid-response build-to-print and build-to-spec work, including prototyping and low-rate initial production support. Its production is 100% inspected and backed by AS9100D, ISO 9001:2015 and IQNET certification, with material traceability maintained throughout the process.