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From its Syracuse, New York manufacturing plant, D&D Motor Systems makes high-performance DC motors and controllers for electric vehicles and specialized equipment. Founded by Michael and Eric Dieroff, the company brings more than 50 years of combined expertise to custom drive-system engineering, motor testing, and in-house manufacturing. Its U.S.-made products are used in applications ranging from golf carts and neighborhood electric vehicles to airport support and hydraulic equipment.
D&D Smith Winery is a family-run Norwalk winery that has been making wine since 2008, pairing its bottles with a bistro, tastings, and a welcoming gathering place. The Smith family began in a home basement with seven tanks and now produces 47 wines, including estate wines made from fruit grown nearby. Its wines have earned more than 150 awards, while the winery’s pavilion, loft, and kitchen host everything from private celebrations to community events.
Founded in Wilmington in 1954 as Master-Port Feed Mills, D&E Equipment designs, fabricates and installs grain storage and material-handling systems for agricultural operations. The company has served Southern Ohio, Northern Kentucky and West Virginia for nearly 70 years, pairing CAD-based project planning with its own millwright, bin-erection and electrical crews. D&E also supports the equipment it sells with factory-trained service personnel, an extensive parts inventory and in-house repairs.
Founded in 1971 in a one-car garage, Lebanon’s D&E Machine Company has grown into a precision CNC machine shop serving projects from one-off prototypes to production runs. The company combines milling and turning with design, reverse engineering, and complete machine assembly, with particular experience supporting automotive and robotics work. Damian and Kristin Whitaker acquired the business in 2026, continuing its long-running Ohio machining operation.
From its Ohio shop, D&J Precision Machine builds and remanufactures Cummins diesel engines and precision performance components for trucks, racers, and professional installers. Founded by Drew Pumphrey from a passion for diesel performance, the company manufactures selected parts in-house—including its X-BEAM billet rods and tool-steel wrist pins—and develops engine builds that balance high horsepower with everyday reliability. D&J is headquartered in Cambridge and is part of the Burnout Brands group alongside BD Diesel and Monster Transmission.
Rooted in a Moraine, Ohio manufacturing site with 175 years of local industrial history, D&M Welding has provided metal welding and fabrication services since 1974. The family-owned company became known for structural racks serving concrete block manufacturers across the United States and has since expanded into sheet-metal work, supported by a fiber laser and CNC press-brake equipment. D&M Welding is ISO 9001:2015 certified and remains under McCarroll family ownership alongside David Barger.
Employee-owned since 1976, D&W Diesel grew from a one-bay Auburn, New York garage into a national company serving industrial and mobile equipment operators. More than 350 associate owners now work from its 110,000-square-foot facility and eight regional locations, carrying forward the service focus that shaped the business from its beginnings as a starter and alternator rebuilder. D&W is ISO 9001:2015 certified.
At the heart of Columbus-based D&W Elements is designer Dan Wisniewski’s family, represented by the ampersand in the company logo. Drawing on Columbus’s art and sports culture, Wisniewski creates vintage-inspired designs for people who want to show where they belong, including custom work for weddings and businesses.
Since 1991, Dacon Industries has built its identity around making rubber and plastic parts in the United States for customers across North America. With manufacturing plants in Oregon and Texas, the company serves demanding industrial applications through custom extrusions and molded parts, including specialized sealing solutions.
Dads Engine Parts LLC. grew out of a 31-year Youngstown-area engine machine shop and now supplies parts primarily for Chrysler Conquest and Mitsubishi Starion automobiles. Established as a new venture after the shop closed in 2020, the business draws on Randy’s 40 years as a machinist and engine rebuilder, and he tests what he sells on three Conquests in his family. Its inventory also supports non-turbo 2.6-liter Mitsubishi applications such as the Dodge Raider and Mitsubishi Montero.
Since 1949, Daffin’s Candies has made locally produced milk and semi-sweet chocolate confections from its Sharon-area candy operation. The business traces its roots to George Daffin’s 1903 family store in Woodsfield, Ohio, and became known for its solid chocolate Peter Rabbit, introduced in 1962. Its Sharon flagship also houses the Chocolate Kingdom, a miniature chocolate world that reflects the family’s long-running blend of candy making and community attraction.
Founded in 1937, Daifuku Co., Ltd. designs and manufactures automated material-handling equipment and systems, and provides installation and after-sales services. Its business spans logistics and distribution, cleanroom production, automobile manufacturing, airports, car washing, and industrial electronics, with production and service operations across a global group.
Daikin Applied designs and manufactures commercial and industrial HVAC systems, and provides aftermarket service for buildings and facilities. It operates within Daikin Industries, which the company describes as having more than 98,000 employees worldwide and nearly $32.5 billion in 2025 revenues. Daikin Applied also identifies its Americas headquarters in Minnesota and lists manufacturing facilities in Minnesota, Virginia, Arizona, and Mexico.
Daimler Truck North America LLC designs, engineers, manufactures, and markets commercial vehicles and related technologies, and is a subsidiary of Daimler Truck Holding AG. Its North American operations include truck and bus manufacturing plants as well as its Portland corporate headquarters and design and test centers. The company’s stated history includes its establishment in 1942, and it serves the commercial transportation industry through brands including Freightliner, Western Star, Thomas Built Buses, and Detroit.
Dairy Farmers of America is a leading global dairy cooperative owned by family dairy farmers. Its farmer-owners supply milk that DFA processes and packages at manufacturing plants across the United States into consumer dairy foods and ingredients, serving both retail and food manufacturing customers. The cooperative reports 9,000 farmer-owners and 5,000 dairy farms.
From its 11-acre manufacturing facility in Causeway, southwest Ireland, Dairymaster makes dairy-farming equipment and herd-monitoring technology for farms around the world. Founded to address the need for better farm products, the company now employs almost 400 people, has filed more than 90 patents, and serves customers in over 40 countries. Its cow-centred designs and 24/7 technical support are built around improving farm efficiency, animal health, and the working lives of farmers.
Founded in Osaka in 1960 and serving North America from Dublin since 2001, Daishin Industrial develops and makes brazing machinery and equipment, building on its original Vapour Flux products. Its Japan-designed and Japan-made systems range from automated brazing machinery to manual equipment, with more than 100 years of combined engineering experience supporting customized installations and process control.
Daisy Brand LLC makes sour cream, cottage cheese and refrigerated dips, with its products manufactured in facilities dedicated exclusively to Daisy Brand. The company traces its dairy-making approach through five generations and builds its products around a Pure & Natural philosophy, avoiding preservatives, stabilizers and additives while using live, active cultures. Daisy serves both household shoppers and food-service customers nationwide, including restaurants and hospitality operations.
What began with a koala cake pop recipe book became Daisy Pops, Amy Mucha’s Kent, Ohio bakery making individually wrapped, hand-crafted cake pops for everyday treats and celebrations. Amy started the business in 2018 while teaching high school math, retired from teaching in 2021, and opened Daisy Pops’ first storefront in April 2023. The bakery also brings cake-pop making to customers through its PopFleet event vehicles, parties, and workshops, and operates as a nut-free bakery.
Founded in 2001 as an automotive modular assembly provider, Dakkota Integrated Systems manages the complex sequencing and delivery of vehicle modules to OEMs and Tier One suppliers. The Holt-based company is one of the largest Native American woman-owned and led manufacturers in the United States, employing more than 2,500 people across 14 U.S. and Canadian locations. Dakkota’s purpose is closely tied to expanding career opportunities in underserved communities, while its employee-driven improvement program has generated more than $36 million in savings since 2011.