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PA
Since 1936, Allegheny Performance Plastics has built its reputation around solving difficult polymer engineering problems in Pennsylvania. The company is known for high-temperature injection molding for demanding aerospace, automotive and space applications, with more than 100,000 parts in low Earth orbit. Its Meadville expansion now extends that precision work into medical manufacturing.
Founded by Scott Schober and Jim Kudis in 1987, Allegheny Petroleum Products Company has grown from a small McKeesport warehouse into a multistate manufacturer serving industrial and fleet customers. The company is particularly known for its fuel-additive production and offers custom blending when standard formulations do not fit a customer’s needs. Its operations follow ISO 9001 quality standards and are supported by a team of more than 100 employees.
Founded by John Wagner in 1967, Allegheny Shredders designs and manufactures industrial shredders and material-handling systems for secure destruction and recycling. Family-owned and operated, the company builds all of its equipment in Delmont, Pennsylvania, including systems that reach 300 horsepower and its distinctive Auto-Feed™ technology. Allegheny also supports customers with factory technical service, parts and equipment planning developed through more than five decades in the shredding industry.
Founded in 1972, Allegheny Steel Distributors processes steel sheet and coil at its 100,000-square-foot facility northeast of Pittsburgh, delivering cut-to-length sheets, sheared blanks and slit coil. The company has expanded its plant four times and became part of Reliance Steel & Aluminum Co. in 1999; it is now part of the Feralloy Group.
Founded in 1977 and owned by Mark and Tim Hazeltine, Allegheny Tool designs and builds plastic injection molds while providing precision and production machining for OEMs and molders. The company operates on a seven-acre facility and is particularly experienced with molds for automotive and heavy-truck lighting products. Allegheny also repairs and refurbishes molds for a quick return to service, and developed its own CarryAll product for transporting two beer growlers.
Since 1955, family-owned Allegheny Valve & Coupling has designed and manufactured valves and fittings for tank transport and liquid and dry bulk transportation. Based in Warren, Pennsylvania, the company helped move the tank-transport industry from schedule 40 to lighter schedule 10 pipe, and its fittings became an industry standard. Allegheny continues to sell directly to customers from a more than 27,000-square-foot facility, with custom assemblages and ASME-certified welding among its capabilities.
Since 1969, Allegis Corporation has supplied industrial access hardware and engineered custom solutions for OEMs, backed by a global supply network and in-house engineering support. Based in Minneapolis, the company pairs thousands of stocked components with product design, prototyping and supply-chain services, while its Rhopac operation converts flexible materials through custom fabrication. Allegis holds ISO 9001 certification and serves customers through ten North American distribution centers as well as operations in Europe and Asia.
Allegra Marketing Print Mail is a locally owned and operated network providing businesses with marketing and print services, and says businesses have relied on it since 1976. Its work combines custom print production with direct mail, signage and marketing support, with more than 170 locations advertised across North America. The company describes its model as local expertise backed by a wider network of resources.
Alleguard brings together six established foam businesses to design and manufacture custom solutions for construction, cold-chain shipping, protective packaging, and OEM applications. Its in-house engineers take projects from CAD modeling and prototyping through fabrication, while an international network of 17 locations supports delivery across three countries. Shape-molded work is produced in ISO 9001:2015-certified facilities, with automotive plants certified to IATF 16949.
Alleima is a materials technology company founded in 2022, with headquarters in Sandviken, Sweden, developing and manufacturing advanced stainless steels, special alloys and industrial heating products. Its operations include seamless stainless tubes and precision wire-based medical components, and it serves selected industrial markets worldwide. The company reported approximately 6,800 employees and more than 900 active alloys in its 2025 portfolio.
With six decades of design and engineering behind it, Allen Brothers (Fittings) Ltd makes marine hardware and develops custom manufactured components from its factory in Essex. The British family-owned business designs, manufactures and assembles all its products in-house, while its engineers also take on work beyond marine equipment for sectors including medical, automotive and defence. Allen is particularly suited to custom projects and short-run or low-to-medium-volume production.
Since 1945, Allen Field Company has manufactured packaging components and custom-engineered parts that help products move, ship, and display more effectively. Its in-house engineering team works from stock hardware to tailored designs, with six manufacturing locations supporting customers in 58 countries. The company has delivered more than 7 billion parts and holds ISO9000-certified manufacturing operations, while also developing recycled and natural-material options for packaging designed to be reused or recycled.
Allen Gauge & Tool Company manufactures inspection gauges for threaded tubular products and describes itself as the original manufacturer of its gauges. Based in Latrobe, Pennsylvania, the company also repairs gauges, calibrating repaired items to API standards and furnishing certification.
Born from the electronic manufacturing department of Allen Organ Company, Allen Integrated Assemblies has built electronic and electromechanical assemblies in Macungie, Pennsylvania, since 1989. The company handles projects from PCB prototypes through complete system builds and testing, drawing on its heritage supporting the world’s leading manufacturer of digital electronic church and theatre organs. AIA operates about 45,000 square feet within Allen Organ’s 250,000-square-foot facility and is ISO 9001:2015 certified.
Founded in 1937 by Jerome Markowitz, Allen Organ Company builds digital organs designed to reproduce the sound and flexibility of pipe instruments. Based in Macungie, Pennsylvania, the company pioneered digital sampling for organs and now manufactures its instruments in more than 250,000 square feet of vertically integrated facilities. Allen organs have been installed in more than 70 countries, with factory-trained service supporting them after installation.
Founded in 1956, Allentown Steel Fabricating Company is a long-established Catasauqua manufacturer known for quality workmanship. It produces custom steel work for customers in the aggregate, chemical, construction and OEM equipment industries.
Family-owned Allentown Tables is operated by husband-and-wife team Michael and Barbara Kemp, who have built the business over nearly 20 years around patient, hands-on guidance for every customer. The Kemps personally deliver purchases and can handle professional assembly, serving homes and organizations throughout the Mid-Atlantic while also helping established owners move or re-felt their tables.
Allentown, LLC manufactures equipment and integrated facility systems for the biomedical research community, with a focus on laboratory animal housing and vivarium operations. The company says it has served this community for over 50 years and traces its engineering and manufacturing heritage to a family-owned factory rooted in the stainless steel industry.
Founded in 2001 by Gus Carey, Ambler-based Allergy Technologies LLC manufactures ActiveGuard® mattress liners designed to prevent and control bed bugs while also addressing dust mites and their allergens. The company’s fabric-based technology is used in settings ranging from hotels and apartment complexes to college housing, and Allergy Technologies says it is now the second-largest funder of bed bug research in the United States. Its “PhilanProfit” model dedicates a portion of profits to improving lives through philanthropic causes.
Founded in 1978 in Western Pennsylvania, Allfab Mfg. Inc. is a custom metal fabricator and precision laser cutting company. Its work grew from machining and welding assemblies for pottery companies into a fabrication operation serving customers in Western Pennsylvania and parts of Ohio.