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WV
Sprouse Windows & Doors has manufactured vinyl windows and sliding patio doors since 1972, building on West Virginia roots that include Sprouse Aluminum Products (founded in 1972) and Omega Window Systems (founded in 1985). From its New Martinsville, West Virginia facility, the company makes replacement and new-construction products for contractors, lumberyards, and distributors, with custom manufacturing and energy-efficient designs among its stated focuses.
Opened in 2005, Stainless Specialties LLC is a veteran-owned and operated fabricating service in New Cumberland, West Virginia. It provides pipe fabrication and industrial maintenance, including on- and off-site welding and fabrication work.
Star Plastics is an engineering-grade thermoplastics compounder whose manufacturing operations began at its Ravenswood, West Virginia facility in 1988. It produces custom compounds and recycled-content resins, with five manufacturing locations and more than 745,000 square feet of production and office space across the United States and China. The company also provides toll processing and polymer sourcing alongside its compounding business.
Founded in Hsinchu, Taiwan, in 2000, STAr Technologies develops and manufactures semiconductor test products and provides testing and engineering services for semiconductor and optical-device industries. The company describes itself as a provider of semiconductor test solutions and has expanded its probe-card and test-system manufacturing operations in Taiwan and internationally.
Founded in 1993, Steel Dynamics is a U.S. industrial metals producer and recycler operating steel, fabrication, and metals-recycling businesses, with facilities in the United States and Mexico. It makes steel using electric arc furnace technology and recycled ferrous scrap, and has expanded its offerings into aluminum operations.
Steel Specialties, LLC is a steel fabricator established in 2006 by Greg Pendergrass and Randy Cunningham. It has grown from a 7,500-square-foot Dunbar shop to two facilities with 47,700 square feet dedicated to steel fabrication, serving the Tri-State Area and customers globally. The privately held company produces fabricated steel components and provides detailing and finishing services.
A third-generation family business, STOCKMEIER Group has spent 100 years building an international network from its base in Bielefeld. The group produces and distributes chemical products for more than 30,000 customers worldwide, working through over 60 locations.
Since 1991, STOCKMEIER Urethanes has built its identity as a global polyurethane systems house serving industrial, sports, and leisure applications. From five production sites in Europe, the United States, and the UAE, the company develops tailored formulations and supports customers with application-focused technical expertise. Its manufacturing network is ISO 9001 certified, with ISO 14001 certification across its European sites and ISO 9001, ISO 14001, and ISO 45001 certification at its Dubai facility.
Stone & Company is a family-owned and -operated concrete and building-supply business serving southwestern Pennsylvania and north central West Virginia since the 1920s. Founded as a lumber and coal partnership, it expanded into concrete production and now operates concrete plants, a block manufacturing facility, and precast concrete facilities. Its locally operated concrete plant in Connellsville, built in the 1940s, remains in operation.
Founded in 1992, STS International is a U.S. Veteran Owned company led by members of the Morgan family, including founder Ted Morgan and co-founder David Morgan. The Arlington-based firm is known for supporting federal defense and security missions with integrated engineering and logistics solutions, backed by global operations and more than three decades of experience. Its quality management program is certified to ISO 9001:2015.
Sulzer is a global industrial company that manufactures equipment and develops process technologies for essential industries. Founded in 1834 and headquartered in Winterthur, Switzerland, it serves customers through a worldwide network of 160 manufacturing facilities and service centers, with work spanning fluid engineering and process industries.
Founded in 2023 by four friends, Sunset Distilling Company makes Appalachian spirits on a farm in Yellow Spring, West Virginia. Its 200-gallon copper still anchors production, turning Appalachian water and carefully selected grains into vodka and whiskey, while the farm’s persimmon appears in one of its distinctive infusions. The company is preparing to open in 2026, alongside its Tuscan-inspired Puesta Del Sol Farm event venue.
Founded in 1990, Super Mail, Inc. brings design, printing and mailing together under one roof for organizations across Ohio, West Virginia and Pennsylvania. Its “concept-to-completion” approach covers everything from developing a piece and preparing its data to printing, finishing and presenting the mailing to the USPS, eliminating the need to coordinate multiple vendors. The Wheeling company also has three decades of experience helping area businesses reduce postage through daily First Class presort service.
Founded in 1982, Superior Hardwoods of Ohio, Inc. is a four-generation, vertically integrated hardwood lumber manufacturer operating five locations in Ohio and West Virginia. It manages timber resources from forest management and harvesting through milling and kiln drying, producing more than 55 million board feet of hardwood lumber annually. The company also provides professional forestland management for landowners.
Superior Plating & Hydraulics provides industrial hard chrome plating and related metalworking services from its Fairmont, West Virginia location. The company also lists stripping, welding, polishing, and grinding among its services.
Founded in Sydney in 2013, Supply Paper Co. makes stationery for documentation and correspondence, from correspondence cards to carefully designed notebooks and binder systems. Its work centers on material processes that take time and attention, with recycled papers and small-edition releases giving the range a quietly considered character.
SVB Foods, Inc. manufactures and packs dressings, sauces, honey, condiments, marinades, and dessert toppings under its own brands, licensed brands, private labels, and for foodservice customers. Its headquarters and production facility are in Martinsburg, West Virginia, with fulfillment warehouse operations at a nearby location.
Serving customers across Ohio, West Virginia and eastern Kentucky, Swagelok Cleveland | Columbus | Charleston is an authorized Swagelok Sales and Service Center supplying fluid-system components and engineering support. Its Custom Solutions team designs and assembles fluid systems, while a 600-square-foot Class 100 cleanroom—capable of operating at Class 10—supports ultra-high-purity fabrication with helium leak testing and controlled packaging. The center has recently expanded its facilities, field engineering and training capacity across its three-location territory.
Founded in 1964 around industrial hard chrome plating, Swanson Industries now manufactures, remanufactures and repairs hydraulic cylinders and related equipment for fluid-power, mining, off-highway and industrial customers. Its 600-plus employees work across more than 385,000 square feet of U.S. manufacturing space, with specialized capabilities for restoring severely damaged cylinders to OEM specifications. Swanson also operates as an OEM-authorized service center and a Parker Hannifin Authorized Build Center.
Since 1861, Swisher has grown from a small Ohio cigar business into a privately held, family-owned company making adult consumer products. Now based in Jacksonville, Florida, the company is known for its long cigar-making heritage and has expanded its portfolio while remaining rooted in the Swisher Sweets brand and a history of production innovation.