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MD
Founded in Maryland in 2024 by Terri Crist and Bobby Lambright, family-owned MountainSide Innovations manufactures custom equipment for the biomedical research community, including electrophysiology recording systems and non-human-primate research equipment. The company carries on the Crist family product legacy, while Bobby brings more than 30 years of mechanical and electromechanical design experience and a three-generation connection to the work. Its products are American-made and include custom chambers, grids, caps, and continuation models of Crist-designed primate chairs.
From its Timonium shop, Mouth Party Caramel makes small-batch gourmet caramels using a four-generation-old family recipe. The Maryland confectioner is especially known for Chesapeake Caramels, which fold iconic Old Bay seasoning into a simple cream-and-butter caramel, alongside classics such as sea salt and chocolate sea salt. Its fresh-to-order sweets are packaged for retail, gifts, and customized corporate orders.
MPI Label Systems produces custom printed labels and labeling products, and also supplies labeling equipment. The company reports 11 locations nationwide and more than 500 employees; its site describes over 58 years of experience in the label industry. It also provides thermal label printing and labeling-equipment repair and technical services.
For more than 20 years, MPS Printing Supplies has been a specialist supplier serving commercial printers and pressrooms. It is particularly known for replacement rollers and practical support for maintaining offset and flexographic equipment, while its G7 Master certification reflects a focus on print-quality workflows.
Privately held and based in Columbia, Maryland, MRA Digital is known for building specialized electronics for military and defense work. Its engineers develop custom video and signal-processing systems for use by defense contractors, military personnel, and training programs in the United States and abroad.
Founded in 1999, Baltimore-based MSI-DFAT Services, LLC invented Direct Field Acoustic Testing and builds the portable systems used to qualify spacecraft and other aerospace hardware for launch noise. Its modular equipment is manufactured in-house, while its engineering crews can bring complete test setups to a customer’s facility or launch site. The company reports more than 25 years in the space industry, over 200 successful acoustic tests, and 16 patents tied to DFAT technology.
For more than 30 years, MSP Custom Solutions has grown from a small T-shirt idea conceived in Hawaii into a Baltimore-area branding shop serving Maryland and customers nationwide. Its work is especially rooted in the corporate and collegiate communities, where it creates custom apparel and promotional merchandise for organizations that need their identity carried beyond the workplace or campus.
Since 1975, Mt. Savage Specialty Refractories has grown from a dry-products supplier in Mt. Savage, Maryland, into an industrial manufacturer now operating from Curwensville, Pennsylvania. Its history is marked by early development of self-leveling low-cement castables and refractory shotcrete mixes, with production consolidated at an upgraded single facility in 2024 to serve demanding industrial markets.
Mtn. Flour Bakery in McHenry specializes in custom wedding cakes and made-to-order cakes for birthdays and other special occasions, alongside a fresh daily display of baked treats at Shop ’n Save Fresh. Customers can work with the bakery on flavors, fillings and finishes, while the regular selection includes favorites such as pepperoni rolls, muffins and cookies. Most bakery orders require 48 hours’ notice, and cake consultations are by appointment.
Mueller Industries, Inc. is a global industrial manufacturer whose companies have supplied products since 1917. Its operations specialize in copper and copper-alloy manufacturing and also produce goods from aluminum, steel, and plastics. Headquartered in Collierville, Tennessee, the company operates across North America, Europe, Asia, and the Middle East.
Women-owned Mulan Dumpling was founded by Kristy Lam, whose Hong Kong upbringing and experience moving to the United States shaped the company’s approach to convenient Asian food. Based in Maryland, the company makes fresh-frozen dumplings from locally sourced ingredients without preservatives, MSG, or artificial flavors. It also supplies food-service programs, including school meals developed to meet USDA National School Lunch Program standards.
Multiparts and Services Inc. is a Baltimore wholesale warehouse serving the diesel and gasoline engine repair trade. Its work combines replacement parts with heavy-duty machine-shop service, including complete engine overhauls.
Opened in 1928, Murray & Heister is an independent Upper Marlboro commercial printer that also supplies branded promotional products, apparel and large-format signage. It combines in-house production with a nationwide network of trusted print providers, giving the company broad capabilities while retaining the personal attention of a small shop. Its reprographics team also handles wide-format blueprint printing, copying and scanning for architects, engineers and construction professionals.
For more than 100 years, Murray Corporation has built its name around clamping expertise and dependable service from its Hunt Valley headquarters. The company serves OEMs, distributors and retailers worldwide, with manufacturing operations across four countries and an ISO 9001:2015-certified quality system that reports 98 percent on-time delivery.
Founded 30 years ago by architect and award-winning furniture designer Tom Shiner, Museum & Library Furniture makes understated wood and steel furniture for museums, libraries, and other public spaces. The company grew from Shiner’s design of The Museum Stool®, created for gallery education programs and now used in collections including the Blanton Museum. Its furniture is made around solid American wood, accessible design, and durability, with installations ranging from Monticello to the National Museum of African American History and Culture.
MW Components manufactures precision metal components for demanding engineering applications, pairing more than 40,000 in-stock designs with custom production from prototype quantities to multi-million-part runs. Based in Charlotte and operating dozens of locations across the United States, the company brings more than 100 design engineers and over 20 manufacturing facilities worldwide to complex, tight-tolerance work. Its aerospace operations are ISO 9001 and AS9100D certified and FAA, DoD, NASA, and ITAR-compliant.
MW Components is a precision component and product manufacturer headquartered in Charlotte, NC, with over 20 manufacturing facilities worldwide. The company accelerates the process of delivering custom, stock, and standard parts to virtually any volume and against demanding deadlines, working to highly complex tolerances. With a team of more than 100 engineers and design specialists, MW Components serves demanding industries including aerospace, medical, energy, and defense, offering a wide range of components from springs and fasteners to bellows and shims.
My Canine Cucina is a Maryland-based kitchen that prepares natural, wholesome dog food, dog treats, and cat treats in designer flavors. It sources ingredients from local farms in Harford County and surrounding areas.
Since 1961, N&S Rentals has served Germantown and the greater Maryland, Washington, D.C., and Virginia region as a family-owned rental and contractor-supply center. Its fleet spans hand tools through heavy construction equipment, complemented by an Ace Hardware Industrial/Commercial Supply Center and a specialty division that manufactures custom-logo silt fence. The company also operates a U-Cart concrete batch plant and provides daily regional delivery, while its rental and sales staff bring a combined average of 150 years of industry experience.
Rockville-based N5 Sensors builds semiconductor-derived chemical sensors and autonomous detection platforms that give machines real-time awareness of hazardous gases and vapors. Its SPH™ microsensor core combines on-device AI with cloud analytics across fixed, wearable, and mesh-network systems, serving applications from defense and emergency response to event and infrastructure safety. Founded by semiconductor physicist Abhishek Motayed, the company holds seven patents and designs its sensing core for calibration-free, over-the-air-updatable operation.