Manufacturer Directory
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MD
Created by parents after mornings and bedtimes became a family struggle, Goodtimer makes an interactive educational device that helps young children build healthy habits through positive reinforcement. The family-owned business began developing its glowing, token-dispensing behavior game in 2018, launched the original Goodtimer in 2019 after more than three years of research and development, and introduced the app-connected Goodtimer 2 in 2024. Its approach was developed with parenting experts and clinical child psychologists, and the products have received nine parenting awards and more than 200 media features.
Founded in 2001 by trained chefs Sidney and Jim Trond, Gourmet by the Bay prepares gourmet foods and caters special events from its home at The Village Shoppe in St. Michaels. Since joining the locally owned shop in 2023, the business has paired event catering and prepared foods with a whole-animal butcher operation, turning local meats into chef-made specialties such as sausages, pâtés and scrapple.
Founded in 2022 by Maryland mother-and-son team Wendy and Chris, GRAFTON Pickleball designs performance paddles and equipment for players and pickleball facilities. After discovering the sport together, the founders cut open paddles at their kitchen table and tested hundreds of prototypes with their Maryland pickleball community, refining each design through player feedback. The company’s community-driven lineup includes its Elemental Series and made-to-order branded court barriers.
Inspired by Grandma Vera, this family-owned bakery makes freshly baked goods and Brazilian-inspired dishes for farmers markets and advance orders. Founded in 1994, it carries forward Vera’s tradition of European breads, pastries, and family recipes through year-round markets in Kensington and Bethesda, along with seasonal appearances in the region.
Grandmapreneur is Connie Inukai’s second-act venture, born after four decades teaching technical writing and her reinvention as an inventor at age 68. She now helps older adults pursue creative projects in retirement, notably through Write Your Selfie®, which turns personal photographs and memories into legacy books. Her experience bringing Tip ’n Split® to QVC, The Today Show, and The View also informs her writing and speaking about entrepreneurship after retirement.
Since 1986, family-owned and operated Grant County Mulch has produced bulk mulch and related landscaping materials from its headquarters in West Virginia for customers across the Mid-Atlantic and Northeast. The company redirects organic waste into all-natural mulch and supplies material directly from its manufacturing sites, with most orders backed by 24-hour delivery. Grant County Mulch is also the official mulch supplier of WVU Athletics.
Born on a kitchen table in Central Massachusetts, Granutec has manufactured American-made granulators and plastic grinders for the plastics industry since 1980. Founded by Merritt “Pete” Tetreault, the company builds machines around individual material applications, testing and inspecting each system before shipment and supporting customers with engineering advice, repairs, and parts.
Graphic Visions is a Gaithersburg, Maryland graphic arts and exhibit production firm that takes projects from design through in-house printing and fabrication. With more than 25 years in the industry, the veteran-owned company operates a 15,000-square-foot facility staffed by 40 media professionals and serves government and commercial clients, including more than 50 federal agencies. Its CPL-certified production operation is built for secure, deadline-driven government work, while its end-to-end model keeps creative and physical production under one roof.
Founded by Carlito Fustino in 2008 after he saw how costly memorials could be, Gravestones and Memorials creates affordable grave markers and headstones for families honoring loved ones. The Lexington Park, Maryland, company is veteran-owned and is especially noted for custom laser-etched photo memorials on black granite, with design proofs approved before production. It works with trained memorial engravers and offers nationwide shipping.
Family-owned and operated since 1908, Gray & Son is a Maryland site-development and paving contractor that also produces asphalt from regional plants. The company’s roots run from the Gray family’s Butler Mill and stone quarry to a multigenerational Baltimore-area construction business, with third-generation executive vice president Katie McInnes helping carry that history forward. Its work includes major public, commercial, and residential projects, including the Under Armour Product & Innovation Center in Port Covington.
Great Frogs Winery is an Annapolis vineyard and winery where owners and winemakers Nathanael and Andrea O’Shea oversee the work from hand-pruned vines through handcrafted, award-winning wines. Night harvesting and careful vineyard management help the wines express the Chesapeake Bay region’s terroir, while the working farm’s tasting room, patio, and tobacco barn give guests a place to enjoy them with local music and wine-friendly snacks.
Founded in 1966 by World War II Navy Seabee Raymond Dubinsky, Greater Maryland Tool & Manufacturing Corp. remains a family-run Maryland manufacturer under the leadership of his son Mark and grandson Steve. The company is known for supplying precision-machined parts to the U.S. Navy Nuclear Propulsion Program since the 1970s, along with work for defense contractors and government agencies.
Since 1933, Green Bay Packaging has remained a third-generation, family-owned manufacturer rooted in Green Bay, Wisconsin. The vertically integrated company now operates more than 40 facilities in 16 states and is known for tying packaging production to responsible forestry, including management of more than 255,000 acres of company forest lands. Its sustainability credentials include SFI-certified sourcing and the first SFI Small Lands Group Certification in the paper industry.
Founded in 1933 by George and Marguerite Kress, Green Bay Packaging remains a third-generation, family-owned company headquartered in Green Bay. Its vertically integrated operations connect forestry resources with the production of custom corrugated packaging and folding cartons, while its 5,000-plus employees work across more than 40 facilities in 16 states. Sustainability is central to the company’s identity, from managing company forestlands to pursuing major mill modernization and emissions-reduction projects.
Founded by Vincent Kelly in 2006, Green Eyes, LLC develops scientific instruments and automated systems for real-time surface-water monitoring, with a particular focus on high-frequency nutrient data. Its equipment grew from Kelly’s University of Maryland environmental research and includes the NuLAB automated nutrient analyzer, along with tools for sampling, sediment erodibility measurement and sensor biofouling control. Green Eyes was acquired by SePRO Corporation in April 2025, while Kelly continues as technical development manager.
Since 1996, Dallas-based Green Valley Food Corporation has grown hydroponic sprouts and other fresh foods, including wheat grass and tofu. Its 60,000-square-foot facility also provides temperature-controlled warehousing and produce inspection services for the Dallas–Fort Worth area. Green Valley puts unusual emphasis on sprout safety, holding every batch until it passes independent microbiological testing under its SQF 2000 level 2, HACCP-based food-safety program.
GreenCarbon turns domestic agricultural waste into hard-carbon anodes and other advanced carbon materials for lithium-ion and sodium-ion batteries. Its plant-powered approach is designed to reduce reliance on foreign supply chains while permanently storing carbon in energy-storage applications. The company also develops carbon materials for uses beyond batteries, including graphene nanomaterials and construction applications.
Baltimore-based and woman-owned, Greenmount Tile makes handmade ceramic tile from American clay, blending digitally enabled prototyping with hands-on tile artistry. Led by principal tile artist Dominique Hellgeth, the company is especially distinctive for its geometric Pentagonal tile collection and custom, one-of-a-kind installations.
Greenway Farms is a family-owned Maryland farm that uses recirculating aquaculture and agriculture systems to raise fresh fish and grow leafy greens and herbs year-round. Based in Gaithersburg, the farm draws on its founders’ international experience in food safety and agricultural technology while supplying restaurants and retailers across the DMV with food grown without antibiotics, pesticides, herbicides, or synthetic fertilizers. Its USDA Harmonized GAP+ and Maryland’s Best Local Farm & Fish certifications underscore the farm’s focus on safe, sustainable local production.
Grimco supplies signmakers and digital print shops with sign-making materials, equipment, and finished traffic signs through a North American wholesale distribution network. Founded as Grimm Stamp and Badge by Henry Grimm, the company began with metal stampings before moving into traffic signs in the 1950s and later expanding into digital printing and aluminum manufacturing. Today, Grimco operates more than 65 locations across North America and also has locations in the United Kingdom.