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United Computer Products, Co., Inc., operating as OPTIA, designs and produces custom rugged computing and tactical solutions for the Department of Defense and other federal agencies. Based in Altoona, Pennsylvania, the small business combines more than 80 years of staff experience in mechanical and systems engineering with rapid prototyping and deployment support. Its ISO 9001:2015-registered operation develops equipment such as rugged workstations and servers for demanding tactical environments.
United Contamination Control, Inc. provides contamination-control processing for components and assemblies, including precision cleaning, mechanical cleaning, inspection, testing, assembly, and packaging. It serves semiconductor, aerospace, military, industrial, medical, automotive, and energy-related applications from its Langhorne, Pennsylvania operations.
Since 1988, York-based United CoolAir has manufactured modular commercial HVAC equipment designed to fit through existing buildings rather than forcing costly renovations. Its all-indoor systems—98% of which fit through a 36-inch doorway—are built for difficult replacement projects, including historic buildings and sites with little outdoor space. The company also makes equipment for outdoor-air ventilation and temporary cooling applications.
Established in 1923, United Dairy Machinery Corporation has evolved from a dairy-focused business into a systems integrator serving manufacturers that depend on sanitary processing. Its Buffalo-based team supports projects from equipment selection through fabrication and installation, while continuing to provide service after systems are in operation.
Since 1954, United Dairy has processed fresh milk and other dairy foods, along with beverages and frozen desserts, for the Tri-State Area and beyond. The family-owned company works with more than 300 local family dairies, sourcing milk from farms within 100 miles of its plants and moving products from farm to fridge in about 24 hours. United Dairy also develops custom ice-cream and yogurt mixes for private-label and co-packing customers in batches ranging from 3 to 400 gallons.
For more than 90 years, United Envelope has manufactured and printed transactional and direct-mail envelopes, producing billions annually for major mailers from its operations in New Jersey, Pennsylvania and Ohio. The company combines high-volume production with 24/7 operations and the flexibility to handle rush orders, complex programs and last-minute changes. Its paper-stock options include FSC, SFI and PEFC certified materials, and its tenured team supports customers with responsive, hands-on guidance.
Founded in 1953 as United Electric Motors Company, Washington, Pennsylvania’s United Industrial Group repairs and services the electro-mechanical equipment that keeps industrial plants operating, from motors and pumps to generators and crane components. Now serving more than 600 customers across Pennsylvania, West Virginia, and Ohio, the company combines a fully equipped repair facility with factory-trained field technicians and 24-hour service. Its electrical motor repair operation holds the Electrical Apparatus Service Association’s highest AR100 accreditation and is UL certified for explosion-proof motor repair.
United Offset is a locally owned and operated Quakertown, Pennsylvania, print shop producing marketing and event materials through a full production facility. With more than 20 years in the printing industry, it combines offset and digital printing with large-format and screen-printing capabilities, while helping customers choose practical solutions for their projects and budgets. The company serves businesses, event organizers, and the surrounding community, handling work from start to finish.
United Plate Glass Company fabricates and distributes architectural glass and aluminum products for the commercial and residential glass industry. Founded as a Butler branch in 1963 and purchased by the Cully family in 1981, the family business grew from six employees to approximately 200 and now operates facilities in Pennsylvania, North Carolina, and Maryland. Its Butler and Lincolnton operations include custom glass fabrication, with a long-standing focus on quality and customer service.
United Power System helps businesses keep computer and emergency-lighting equipment running by installing, maintaining, and repairing uninterruptible power systems. Based in Whitehall, the company’s factory-trained field engineers work across major UPS brands, with 24/7 emergency support and power-quality analysis for critical systems. It also supplies new equipment and tested replacement parts, while recycling removed batteries and other components during replacement or decommissioning.
Family-owned since its beginnings in the 1940s, United Precision Products has spent more than 70 years building a reputation as a go-to supplier for aerospace manufacturers. The Dearborn Heights company is known for its PROP® process, which brings quality, engineering, and manufacturing together to keep complex customer work right the first time.
United Receptacles supplies waste, recycling, and smoking-management containers for indoor and outdoor settings, with a catalog that ranges from decorative aluminum receptacles to rugged steel and fiberglass units. Its offerings include fire-safe designs, high-capacity containers for high-traffic places, and specialized models that combine waste collection with smoking management. The site identifies Janisan, Inc. as the company behind the business.
United Refining Company is an independent refiner and marketer of petroleum products, founded in 1902 in Warren, Pennsylvania. The company operates a modern refinery with a capacity of approximately 70,000 barrels per day, producing gasoline, distillates, and asphalts, and markets through over 350 retail outlets under the Kwik Fill, Country Fair, and Keystone brands. United employs over 4,000 people and serves customers in Pennsylvania, New York, and Ohio.
Marking 50 years in the refractory business, Pittsburgh-based United Refractories Co. is known for application-specific industrial refractory solutions backed by its 4U Service approach. The company has maintained a certified quality management system since 1999, now certified to ISO 9001:2015, and its work reaches customers in more than 20 countries across four continents.
United Refrigeration Inc. is an HVAC/R distribution company serving contractors through a network of branches. It supplies the equipment and service materials those professionals need for refrigeration and climate-control work.
Formed in 2019 through the purchase of Universal Remediation’s assets, Pittsburgh-based United Remediation Technology carries forward a remediation business whose technology grew from NASA’s space program. The company makes natural products for clients handling industrial hydrocarbon pollution, with its solutions used around the world to clean up oil and fuel spills.
Founded in 1995, United Rotorcraft designs, manufactures, and integrates aircraft systems and modifies and maintains rotorcraft and fixed-wing aircraft. It provides mission-specific aircraft completions, including medical interiors and firefighting aircraft conversions, from facilities in Colorado, Arizona, and Pennsylvania.
Founded in 1984 by Christian Hammarskjold, United Safety & Survivability Corporation has grown from a small venture focused on safer transit products into a global safety technology company. It engineers and manufactures safety technologies for people, vehicles, and critical infrastructure, with mobile fire suppression among its central areas of focus. The company reports operations across North America, Europe, the Middle East, and Australia.
United Stars, Inc. is a parent company whose subsidiaries manufacture precision-engineered metal products for OEMs and Tier 1 suppliers. Its businesses produce products such as stainless steel welded tubing, industrial gears and shafts, electrical copper components, and stainless steel and high-alloy castings. The group says it has refined a disciplined acquisition strategy over the last thirty years.