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Founded by mother-daughter team Heather and Hannah, Pittsburgh-based Hannahtopia makes its signature NillyNoggin EEG Caps for children and adults undergoing epilepsy testing. Shaped by Hannah’s lifelong experience with severe epilepsy and frequent EEGs, the colorful, washable caps are designed to make the procedure feel less stressful while covering the wires and leads. Hannahtopia manufactures the caps in Pittsburgh, Pennsylvania, and makes them in the USA.
Since Clifford B. Hannay built his first fuel-delivery reel in 1933, Hannay Reels Inc. has manufactured hose and cable reels for OEM and aftermarket use. The fourth-generation family business operates from more than 200,000 square feet of manufacturing space in Westerlo, New York, and has built 3 million reels while expanding from its original fuel-delivery roots into applications worldwide.
Founded in 1896, Hannecard makes industrial roller coverings and coatings and supports them with repair, maintenance, grinding and optimization services. The group combines more than 120 years of experience with a worldwide network spanning 17 countries, more than 25 production sites and over 1,000 employees, while maintaining local partnerships to standardize roller technology across markets.
Since 1896, Hannecard has grown from its long industrial heritage into a global group known for specialized roller coverings and coatings. Its Ohio division serves manufacturers with roller refurbishment and related surface work, backed by more than 900 employees and production sites in 17 countries.
Based in Ashville, Hannmade Baked Goods creates custom cookies for memorable moments in Central Ohio. The bakery also accepts corporate orders, giving local businesses a way to mark occasions with made-to-order treats.
Founded in Canton in 1926, Hannon Electric Company repairs, rebuilds and sells electro-mechanical equipment for industrial customers, with particular depth in electric motors and related systems. Now in its third generation, the company operates repair facilities across Ohio and in Pennsylvania, including large shops equipped to handle machinery weighing up to 200 tons. Its Hanco International division, formed in 1951 to serve mining and power companies, continues to sell and service equipment worldwide.
Founded in 1986 as an automotive climate-control supplier, Hanon Systems now develops and manufactures thermal and energy-management systems for electric, hybrid, plug-in hybrid and fuel-cell vehicles. The Hankook & Company Group subsidiary operates a global network of more than 50 manufacturing sites and 20,000-plus employees, with particular depth in automotive compressors and vehicle heat management. Its expansion into electrification includes a new Canadian e-Compressor plant and R&D center planned for Vaughan, Ontario.
Born from Chris and John Repasky’s paver-making venture more than 50 years ago, Hanover Architectural Products is a second-generation, family-owned manufacturer in South Central Pennsylvania. The American-owned company is known for tailoring concrete paving materials to individual architectural projects, with custom aggregate blending and a deep library of color options at the heart of its work.
Hanover Armory is a Hanover, Maryland firearms maker and shop known for building its own HA-15 rifles and supporting customers with custom firearm work. Its American-made firearms carry a lifetime warranty, while its modern-firearm services are available to owners seeking customization or repair.
Established in 1940, Hanover Concrete, Co. is a family-owned concrete producer and building-materials supplier based in Hanover, Pennsylvania. It manufactures ready-mixed concrete and fabricates reinforcing steel in-house, and has expanded to serve south-central Pennsylvania and northern Maryland through its Hanover, Shrewsbury, and Gettysburg operations.
For more than 30 years, Hanover Conveying Systems has been a Hanover, Pennsylvania manufacturer known for building American-made equipment in-house. Its engineers and fabricators create custom stainless-steel conveyors for manufacturing and construction operations, with particular experience in sanitary production settings and demanding material-handling environments.
Family-owned since 1924, Hanover Foods Corporation grew from Harry Virgil Warehime’s Hanover Canning Company into a Pennsylvania food manufacturer rooted in relationships with farmers. Today, it preserves that agricultural connection through its work with family farms in the United States and Guatemala while supplying food products for retail, food-service, and industrial customers.
Founded in 1952 by Harry Walter as a basement rail business, Hanover Iron Works has grown into a locally staffed Pennsylvania metalworking company with a Richmond, Virginia facility. Many of its craftspeople have been with the company for decades, carrying old-world skills into today’s commercial construction work. Hanover is known for coordinating projects from detailing through erection for architects and general contractors across the Mid-Atlantic and North Carolina.
Founded in 1970, Hanover Lantern is a family-owned, locally operated Hanover, Pennsylvania manufacturer of American-made cast-aluminum outdoor lighting and related site furnishings. Its made-to-order products are handcrafted for homes, commercial developments, and municipal streetscapes, with custom designs and hand-applied finishes that range from historically accurate lanterns to modern architectural fixtures. The company has spent more than five decades building coordinated outdoor environments designed for lasting performance, including coastal- and dark-sky-friendly options.
Hanover Outdoor Products Inc. is focused on providing products to create extraordinary outdoor living spaces from the curb to the backyard. The company designs, manufactures, and markets custom cast aluminum decorative fixtures and accessories recognized for their quality, unique designs, and finishes.
Hanover Uniform supplies uniforms and work apparel, combining U.S. manufacturing with production facilities in Mexico and China to serve more than 2,000 customers worldwide. Based in Baltimore, the privately held company represents nearly 400 factories and pairs its broad sourcing network with warehousing and web-based uniform ordering and tracking software.
What began as Eddie and Beth McDonald’s decade-long winemaking passion became Butler County’s first winery when Hanover Winery opened in 2009 on their rural Hanover Township farm. The couple turned a hobby shed into a tasting room and grew the property into a vineyard and wine-production operation known for more than two dozen award-winning wines, with wood-fired pizza added in 2023. Hanover Winery is currently closed as the owners retire after more than 16 years, with a possible reopening dependent on a new owner.
HANSA-FLEX USA supplies and custom-manufactures hydraulic hose lines, precision-bent pipe assemblies, and fluid-power connection technology as part of the HANSA-FLEX Group. Its distinctive reach combines multiple U.S. locations with mobile hydraulic workshops that can manufacture replacement hose lines on-site, helping customers respond to equipment failures without waiting for a shop-built assembly. The company’s quality systems include ISO 9001:2015, ISO 14001:2015, and ISO 45001:2018 certifications.
Founded by first-generation farmers Brian and Vickie on two acres in 2019, Hansel Hill Farm is a Millersville urban micro-farm growing local food and raising animals while welcoming the community for hands-on farm experiences. The disabled combat veteran- and woman-owned farm uses natural, pesticide-free growing methods and turns its working farm into a gathering place through educational programs, seasonal events, and its local Harvest Hub.
Hansen Engineering, Inc. processes iron oxide and other materials, provides calcining for residual metal waste, and sells inorganic pigments and polypropylene superbags. Based in West Alexander, Pennsylvania, the company also offers scrubber design and turnkey packages, including acid-fume scrubbers.