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Helios Electric LLC is a full-service electrical engineering, construction, and design firm for high-, medium-, and low-voltage power systems. Its capabilities include electrical equipment manufacturing and integration, power system design and studies, field retrofits, inspection, testing, commissioning, automation, and SCADA solutions for utility, industrial, railway, water and wastewater, aviation, healthcare, and mission-critical facilities.
As a Pittsburgh-based benefit corporation, Hellbender is known for bringing physical-AI manufacturing back onshore while tying its business to environmental and community work. From its 90,000-square-foot campus, the company helps robotics and industrial customers move computer-vision hardware from concept into production. More than a quarter of its staff are veterans, and its profits support watershed conservation and local veterans organizations.
Hellbender Vinyl manufactures custom-pressed vinyl records at its Pittsburgh plant and additional locations in Philadelphia and Milwaukie, Oregon. The company says it was started by musicians and emphasizes a dedicated project concierge and record-by-record quality review. It also describes water-conservation equipment at its facility and says a portion of project proceeds supports hellbender salamander conservation in western Pennsylvania.
Established in 2008, Heltronics Inc. is a Reading, Pennsylvania contract manufacturer known for supporting customers from early prototypes through high-volume production. Its engineers and IPC-certified assembly personnel work with startups and large corporations on custom manufacturing projects, including wire harnesses and electromechanical assemblies, in an ISO 9001:2015- and UL-certified facility.
Founded in 1928 by Walter O. Helwig, Helwig Carbon Products, Inc. manufactures carbon brushes and related electrical and mechanical components from its Milwaukee headquarters. The company describes itself as the largest American-owned carbon brush manufacturer and operates a 135,000-square-foot facility, with a vertically integrated supply of carbon plate material through Speer Carbon in St. Mary’s, Pennsylvania.
Founded in Somerset in 2016 by brothers Brett and Drew Hemminger, Hemminger Custom Metals is a family-owned shop known for turning customers’ ideas into made-to-order metalwork. With more than 65 years of combined experience, the company serves homes and businesses throughout the tri-state region and beyond.
Hemoglobin Oxygen Therapeutics develops human and veterinary hemoglobin-based oxygen carriers that increase blood’s ability to transport oxygen. Its Hemopure product is used in South Africa and Russia for acute anemia and remains investigational in the United States, while Oxyglobin was the first veterinary oxygen therapeutic approved in the US and Europe for canine anemia. The company draws on more than 25 years of research and has consolidated production at a facility in Souderton, Pennsylvania, undergoing a multimillion-dollar expansion.
More than a decade of research and engineering work has shaped Henan Hengdao New Materials into a Zhengzhou-based new-building-materials company focused on lightweight construction systems. It develops and delivers steel-structured lightweight panels for industrial and civil building projects, with applications reaching from metro facilities to large industrial sites.
Hendrick Manufacturing is a family-owned metal manufacturer founded in 1876, with its perforated-metal operations based in Carbondale, Pennsylvania. The company makes perforated metal and custom fabrications, and its Hendrick Screen division manufactures Profile Bar and wedge wire screens from an Owensboro, Kentucky facility. The company describes a 125,000-square-foot Carbondale facility and a history that began as a commercial manufacturer of perforated metal screens.
Founded in 1876 and headquartered in Düsseldorf, Henkel is a global company with industrial and consumer businesses, including North American operations across about 70 facilities and more than 7,000 employees. Its Adhesive Technologies business develops and supplies adhesives, sealants and functional coatings for industrial customers, craftsmen and consumers, while Henkel Consumer Brands serves hair and laundry and home care categories. In 2025, the company reported global sales of about €20.5 billion.
Since its founding in 1945, Hennecke GmbH has built its identity around polyurethane innovation, introducing the first high-pressure metering system for polyol and isocyanate shortly after the company began. Now based in Sankt Augustin, Germany, Hennecke employs 650 people across eight locations and develops industrial production technology for polyurethane processors worldwide. Its TECHCENTER gives customers a place to turn new application ideas into series-ready production.
Hennemuth Metal Fabricators is a family-owned and operated ductwork manufacturer and distributor founded in 1954 by Gordon Hennemuth. Based in Oakdale, Pennsylvania, the company fabricates custom duct and fittings for commercial and residential HVAC contractors, with in-house spiral and rectangular duct production. Its 60,000-square-foot fabrication shop opened in 2018, and the business reports more than 100 years of combined staff experience.
Henry H. Ross & Son, Inc. fabricates and installs custom countertops at its Lititz, Pennsylvania facility. Founded by Henry Ross in 1956, the third-generation, family-owned business evolved from laminate and Corian work to fabricating more than 50 countertop surfaces, serving residential and commercial customers across Central Pennsylvania.
Family owned and operated since 1962, Henry Molded Products manufactures molded fiber products from recycled paper. It grew from a decorative floral vase product line into a full-line molded fiber manufacturer and is especially known for its STAKKER® roll cradle system, which it supplies to customers worldwide.
With a 40-year history in Corry, HENSA STMP carries forward the legacy of Chase Manufacturing Corry as a contract manufacturer serving customers across industries such as plumbing and medical equipment. The company supports both specialty projects and recurring production, working closely with customers on metal stamping and fabrication needs.
Heraeus Electronics develops and manufactures materials for assembling and packaging electronic devices, pairing material systems with components and application services for automotive, power electronics and advanced semiconductor packaging. With eight development centers and production facilities across Asia, Europe and the United States, the company supports customers through global reach and local presence. Its production sites hold IATF 16949 and ISO 9001 certifications, alongside multisite ISO 14001 and ISO 45001 certifications.
Family-owned since 1660, Heraeus is a Hanau-based technology company built around generations of materials expertise. Its Chinese operations extend that heritage through precious-metal and electronic-material manufacturing for industrial and semiconductor customers, including a Shanghai business founded in 1994 and Sino-German joint ventures established in 1995 and 2002.
Heraeus Medical is a Germany-based medical manufacturer known for making bone cement at its Wehrheim headquarters for hospitals around the world. Its work supports orthopaedic surgeons and other healthcare professionals involved in joint surgery, infection management, and bone regeneration, with the PALACADEMY platform providing practical training alongside its products.
Started in Saranac in 1958 with 6,000 birds, Herbruck’s Poultry Ranch has grown into a fourth-generation family egg producer supplying billions of eggs to retailers and food-service customers nationwide. The fully integrated operation manages the journey from feed and pullet raising through egg production, processing and distribution, while also turning poultry litter into organic fertilizer. Its flock has grown to more than 10 million hens, but the company still operates with the family-farm priorities of animal care, environmental stewardship and community involvement.