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PA
With roots in a custom upholstery company founded in the 1940s, DEL Motorized Solutions has made automated window treatments, lighting and controls since 1976. The company’s distinctive work includes custom-fabricated systems and specialty shades shaped to match arched and angled windows, tested in-house for a precise fit. DEL is an inaugural Lutron Native by Design partner and a Lutron Hall of Fame inductee, integrating Lutron technology into products such as its Contour shades and PerfectFit recessed concealment systems.
Locally and family-owned, Del Structures brings more than 20 years of Amish craftsmanship to custom outdoor building projects. The company serves property owners across Pennsylvania, Delaware, New Jersey and Maryland, designing each structure to the customer’s specifications rather than delivering prefabricated work. Projects carry a 25-year warranty and a 100% satisfaction guarantee.
Since 1962, Del-Wood Kitchens has handcrafted custom wood cabinetry for kitchen, bath and other home projects from its Hanover, Pennsylvania facility. The company’s 45,000-square-foot plant combines careful board selection and experienced woodworking with climate-controlled production, while converting its wood byproducts into energy and heat. Del-Wood serves dealers, builders, designers, architects and homeowners nationwide.
Founded in 1950 as an Italian market in Jeannette, Pennsylvania, DeLallo remains a family-owned and operated producer and national distributor of Italian and Mediterranean specialty foods. The company combines sourcing and production with nationwide distribution, with a particular focus on olives and antipasti and Italian grocery products. Its Three Saints Bakery operation, acquired in 2014, adds nationally distributed specialty tea cookies to the family business.
Founded in Hatboro in 1955 by Charles W. Diliberto and his wife, Delaware Valley Concrete Company produced ready-mix concrete for more than six decades, serving construction projects across southeastern Pennsylvania and the Delaware Valley. It operated multiple production facilities and a fleet of more than 100 mixer trucks, and specialized in standard and custom concrete mixes for residential and commercial construction. The company states that it is no longer operating independently; former locations are now operated by Heritage Concrete or Silvi Materials.
Founded in 1967 by brothers-in-law Stephen J. Kiszely and Thomas B. DiPaolo, Delaware Valley Packaging Group is a family business that supplies packaging materials, equipment, and consultative solutions from its Bensalem operation. The company has grown into one of the region’s largest independently owned packaging distributors while retaining its problem-solving approach, including a Vendor Managed Inventory program and a newer aerospace division. DVPG is now ISO 9001:2015 certified, and the Kiszely family’s third generation joined the company in 2024.
Delco Shooting Supply is a fully licensed Delaware County firearms store that stands out for making its own hard-cast and polymer-coated bullets on-site, alongside selling firearms and reloading supplies. Its staff also provides practical reloading guidance, demonstrations, firearm transfers, and basic firearm services for local shooters. The store serves first-time buyers as well as target shooters, reloaders, and competitors from its Prospect Park location.
Family-owned and operated in Centre Hall, Delectable Delights by Heather is the home-based baking business of Heather Luse, who has baked at Penn State since 1993 and now serves as its executive pastry chef. Drawing on culinary-school training and old-fashioned baking wisdom, Luse personally creates custom cakes for weddings, parties and other events, with family members pitching in as needed. The business is deliberately small and one-to-one, and it does not overbook.
Tracing its roots to an Italian immigrant’s pasta-sauce recipe from 1914, DelGrosso Foods makes pasta sauce as America’s oldest major family-owned producer in the category. Founded by Ferdinand and Mafalda DelGrosso, the company remains part of a family of food businesses that also includes prepared foods for fundraisers and takeout.
From Pittsburgh, DeLong Performance Enterprises supplies specialized equipment and components for kart racing and junior dragsters. Its offerings include BBT compact electric starters, SMC Vortex clutches, and kart protection hardware such as its quick-access clutch guards. The company also sells WMS sprockets and related kart drivetrain parts, giving racers a focused source for track-ready equipment and replacement components.
Founded in 1994, Delphinus Engineering grew from a small professional-services company into a federal and defense contractor supporting more than 700 professional and technical personnel. Its work brings together marine engineering and ship repair with cyber operations and security, serving government customers from offices across the East, West and Pacific coasts. Delphinus is also a successful graduate of the Small Business Administration’s 8(a) program, and its marine engineering and services operations hold quality systems recognized to ISO 9001:2015 requirements.
Delta Digital Video grew out of government consulting and carries a standards-setting legacy: its personnel helped shape the digital communications standards that underpin modern multimedia systems. Today, as a division of Delta Information Systems, it makes rugged video encoders for military ISR and flight-test programs, where full-motion imagery must travel reliably across constrained links.
Born from a 1978 machine-tool retrofit business, Delta ModTech now designs and builds motion-controlled coating, converting, and packaging systems for demanding production work. Its modular platforms and in-house R&D facilities let customers prove difficult processes before moving from development to commercial manufacturing, with particular depth in regulated healthcare and precision web converting. The Ramsey, Minnesota company’s quality system has been certified to ISO 9001 since 1999, and its support team provides remote and on-site help throughout a machine’s life.
Delta Packaging is a West Monroe manufacturer serving the food-service disposable market with printed and blank packaging. Its team describes more than 100 years of combined experience and takes customer projects from approval through finished production, with particular attention to print quality and service.
For more than 50 years, Delta Telemetry Systems has been a trusted aerospace-industry partner, bringing together four specialized Delta Information Systems companies under one technical umbrella. The U.S.-designed and built organization serves defense agencies, aerospace primes, government laboratories, and launch facilities with telemetry systems for demanding test and space missions. Its distinctive role is providing a single, integrated path from captured mission data to usable displays.
Since its 1955 founding in a one-room Narberth office, Delval Equipment Corporation has grown into a 115-person Mid-Atlantic boiler specialist. The company says it has supplied more than 5,000 packaged boilers in the region, while its five offices support commercial and industrial customers with boiler-system design and 24/7 service.
Founded in 1987, Delweld Industries Corporation manufactures metal products in Stoystown, Pennsylvania, taking projects from concept and design through finished delivery. Its 105,000-square-foot plant combines flexible fabrication systems with a dedicated 10,000-square-foot welding area, allowing the company to handle both small and large jobs while providing the service of a small business. Delweld serves customers across the Northeast, Midwest, South, and international markets from its Western Pennsylvania base.
Founded in 1989, Demco Automation is a Pennsylvania manufacturer with more than three decades of experience developing custom automation for technology-based industries. It is best known for its patented Demco Wedge platform, which helps manufacturers scale assembly systems as production needs change.
Demming Diversified Inc is a manufacturer in the packaging and containers industry.
Since 1861, Demmler Machinery has built its identity around helping area metal fabricators choose and maintain the equipment that fits their work. The company’s long history is reflected in customers whose relationships with Demmler span three generations, while its team supports shops with machinery and service.