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Showing 5881-5900 of 9165 results

PA

Operation Warm, Inc logo

Operation Warm, Inc

GLEN MILLS, PA
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Founded in 1998 after Dick Sanford saw children waiting for a school bus without coats on a freezing day, Operation Warm is a national nonprofit built around the belief that new clothing can restore a child’s confidence as well as provide basic protection. Incorporated as a 501(c)(3) in 2002, it works through community partners to place brand-new coats and shoes with children facing poverty, serving more than 7 million children to date.

Children’s CoatsAthletic ShoesSocks+22 more
Oppenheimer Precision Products logo

Oppenheimer Precision Products

HORSHAM, PA
51-200
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Known for its deep photometric expertise, Oppenheimer Precision Products is a suburban Philadelphia manufacturer of custom illuminated display systems for military applications. Its 55,000-square-foot facility keeps production and product repair in-house, while the company’s engineering staff brings an average of 25 years designing cockpit displays and instrument lighting. Oppenheimer is certified to ISO 9001:2015 and AS9100:2016.

Illuminated Display and Control SystemsControl PanelsDisplay Bezels+25 more
OpSec Security logo

OpSec Security

LANCASTER, PA
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With roots stretching back more than 40 years, OpSec Security develops physical and digital anti-counterfeiting and brand-protection solutions for companies and governments worldwide. Its manufacturing work includes holographic films, foils, labels and laminates, while its software helps track products and supply chains in real time. The Crane NXT company combines authentication engineering with online brand and content protection, and its operations hold certifications including ISO 9001, ISO 14001, ISO 14298 and ISO 27001.

Holographic FilmsHolographic FoilsHolographic Labels+69 more
Opta Group LP logo

Opta Group LP

NEW KENSINGTON, PA
501-1,000
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Formed in 2019 through the merger of Opta Minerals and SKW Metallurgie, Opta Group LP develops custom-engineered additives, specialized equipment and technical solutions for modern manufacturing. Its Carbide Industries business produces calcium carbide, whose reaction with water generates acetylene and calcium hydroxide for industrial use. With more than 900 employees and operations across four continents, the group combines global reach with on-site technical expertise.

Metallurgical AdditivesHot-Metal Desulfurization ReagentsCustom-Designed Fluxes+50 more
Opta Group LP logo

Opta Group LP

VERONA, PA
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Opta Group LP is a global industrial manufacturer formed in 2019 by the merger of Opta Minerals Inc. and SKW Metallurgie GmbH. It develops and produces custom-engineered materials and equipment for metallurgical, construction, and specialty chemical applications, with more than 1,000 employees and 35 locations across 11 countries. Its portfolio includes metallurgical treatment products, calcium carbide-based chemicals, and recycled glass materials.

Custom-Designed FluxesTundish FluxesSlag Conditioners+46 more
Optical Filters USA LLC logo

Optical Filters USA LLC

MEADVILLE, PA
51-200
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Founded in Northwestern Pennsylvania in 2003, Optical Filters USA designs and manufactures custom optical enhancements that protect and improve electronic displays. The locally owned company specializes in display bonding and EMI shielding, with production ranging from rapid prototypes to high-volume assemblies at facilities in the United States and Europe. Its in-house research, testing, and manufacturing operations are certified to ISO 9001 and ISO 14001 standards.

Cover GlassPlastic Display LensesDisplay Filters+52 more
Optical Guidance Systems logo

Optical Guidance Systems

HUNTINGDON VALLEY, PA
2-10
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Now in its 31st year, Optical Guidance Systems is an owner-led Pennsylvania company known for bringing the Ritchey-Chrétien telescope line to broad worldwide acceptance. It builds research-grade observatory systems for institutions such as universities, government agencies, NASA and ESA, with custom instruments shaped around demanding research needs.

Ritchey-Chretien TelescopesClassical Cassegrain TelescopesResearch Grade Tracking Mounts+22 more
Optima Technology Associates, Inc logo

Optima Technology Associates, Inc

LEWISBERRY, PA
51-200
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Optima Technology Associates, Inc. is a provider of high-performance PCBs and electronic manufacturing solutions, specializing in PCB assembly, box/system assembly, and engineering services. The company serves industries including medical, industrial, consumer electronics, and transportation, and holds multiple ISO and industry certifications.

Printed Circuit BoardsPCB AssemblyBox & System Assembly+33 more
OT

Optima Transformer

LANSDALE, PA
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Optima Transformer is a Texas-based manufacturer specializing in designing and producing high-quality transformers, including pole-mounted, pad-mounted, and power transformers for voltage levels from 2kV to 500kV. The company offers nationwide repair and testing services, leveraging global partnerships for cost efficiency while maintaining top standards.

Pole-Mounted TransformersSingle-Phase Pad-Mounted TransformersThree-Phase Pad-Mounted Transformers+19 more
Optimas OE Solutions, LLC logo

Optimas OE Solutions, LLC

ALLENTOWN, PA
1,001-5,000
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Known for combining regional support with global supply, Optimas OE Solutions manufactures and distributes fasteners for OEMs and other industrial manufacturers. The company serves more than 3,500 customers and produces over 400 million fasteners annually at its Wood Dale, Illinois facility, with certified quality systems supporting automotive and industrial requirements.

Engineered FastenersStandard FastenersC-Class Components+64 more
Optimum Controls Corporation logo

Optimum Controls Corporation

READING, PA
11-50
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Optimum Controls Corporation provides control system integration, installation, HVAC controls, panel fabrication, and control component manufacturing for industrial, municipal, commercial, governmental, institutional, and heavy commercial markets. It fabricates control panels and custom enclosures and manufactures embedded and application-specific programmable controllers in Reading, Pennsylvania.

Control PanelsSimplex Pump PanelsDuplex and Triplex Pump Panels+57 more
Optimus Technologies, Inc logo

Optimus Technologies, Inc

PITTSBURGH, PA
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Founded in 2010, Optimus Technologies develops technologies that enable heavy-duty diesel fleets to operate on biogenic fuels, including 100% biodiesel. Its fuel-system ecosystem is backed by more than 200 million miles of fleet operation and was developed to help fleets reduce emissions without interrupting operations.

Heavy-Duty Biodiesel Fuel-System UpgradesVector Fuel SystemBiodiesel Tanks+17 more
OptiNose US, Inc logo

OptiNose US, Inc

YARDLEY, PA
51-200
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OptiNose develops specialty pharmaceutical products and Bi-Directional™ Exhalation Delivery Systems that use a patient’s exhaled breath to carry medicine high and deep into the nasal passages. Founded around the clinical experience of ENT surgeon Per Djupesland, the company has applied the platform to treatments including XHANCE® for nasal polyps and chronic sinusitis, while also licensing it for migraine therapy and exploring nose-to-brain delivery. OptiNose was acquired by Paratek Pharmaceuticals in May 2025.

XHANCE®ONZETRA® Xsail®Bi-Directional Exhalation Delivery Systems+12 more
Optinova logo

Optinova

PLYMOUTH MEETING, PA
501-1,000
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Founded in 1971, Optinova develops and extrudes precision tubing for demanding medical and industrial applications, including components used in catheters and critical industrial systems. One of the world’s oldest extrusion companies still in operation, it combines Nordic engineering with global manufacturing in Finland, Thailand and the United States, serving partners in more than 50 countries. Its in-house tooling, polymer expertise and secondary operations allow customers to move from prototypes to high-volume production with the same extrusion partner.

TubingPTFE TubingFEP Tubing+98 more
OptoTech Optikmaschinen GmbH logo

OptoTech Optikmaschinen GmbH

PALM, PA
501-1,000
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Founded by Roland Mandler in 1985, OptoTech Optikmaschinen GmbH builds optical machinery and process technology, supplying complete production lines for precision optics and ophthalmic manufacturing. Based in Wettenberg and part of the Schunk Group, the company has grown to 11 locations, 577 employees and 50 active patents, with a global service network supporting customers from commissioning through repairs and training.

Precision Optics MachineryOphthalmic Optics MachineryOptical Grinding Machines+58 more
Optotherm, Inc logo

Optotherm, Inc

WARRENDALE, PA
2-10
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Founded in 2000, Optotherm is a Warrendale, Pennsylvania manufacturer known for building specialized infrared systems for electronics engineers. Its Sentris platform helps researchers and failure-analysis teams pinpoint faults and measure temperatures in semiconductor devices and circuit boards.

Sentris Infrared Imaging SystemsMWIR Lock-in Thermography SystemsLWIR Lock-in Thermography Systems+42 more
OptoVibronex, LLC logo

OptoVibronex, LLC

MT. BETHEL, PA
2-10
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OptoVibronex develops the patented OptoScope 2.0, a non-invasive medical imaging and material-characterization device that combines optical coherence tomography with vibrational analysis to map tissue structure and mechanical properties. Based in Mount Bethel, the company is focused particularly on dermatology and aesthetic dermatology, with potential uses in virtual biopsy, wound healing and implant assessment. Co-founder and Chief Technical Officer Dr. Fred Silver brings 35 years as a Rutgers pathology professor, more than 30 patents and over 200 publications on biological materials and their mechanics.

OptoScope 2.0™VOS™ 2.0Manufacturing of non-invasive tissue characterization devices using Optical Coherence Tomography and vibrational analysis+8 more
Opus Packaging logo

Opus Packaging

WASHINGTON, PA
11-50
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Opus Packaging manufactures custom corrugated and industrial packaging products, including shipping containers, custom partitions, graphic packaging, interior dunnage, packs and kits, and returnable systems. It also provides packaging consultation and design, testing, production, warehousing, distribution, delivery logistics, inventory management, and fulfillment services.

Shipping ContainersCustom PartitionsGraphic Packaging+34 more
OPW Clean Energy Solutions logo

OPW Clean Energy Solutions

ALLENTOWN, PA
51-200
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OPW Clean Energy Solutions brings together established brands that engineer and manufacture fluid-handling equipment and cryogenic systems for hydrogen, LNG, helium and industrial gases. Its portfolio spans ACME Cryogenics’ mission-critical systems, RegO’s pressure-control equipment and CPC-Cryolab’s cryogenic components, giving the business a distinctive reach from individual valves to installed infrastructure. The group’s roots include ACME Cryogenics, established in Allentown in 1969, and RegO Products, whose history traces to the invention of the CO₂ cylinder valve and its 1918 founding.

Vacuum-Jacketed PipingVacuum-Jacketed HosesVacuum-Jacketed Piping Accessories+73 more
OPW logo

OPW

ALLENTOWN, PA
1,001-5,000
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Since 1892, OPW has built its identity around dependable fluid-handling solutions for customers worldwide. Now part of Dover, the company employs more than 1,500 people and operates manufacturing sites across four continents, including a Hamilton, Ohio-based operation where OPW Engineered Systems has made components in the USA since 1983. OPW maintains ISO-9000 certification across its global manufacturing footprint.

Loading ArmsSwivel JointsQuick Disconnect Fittings+69 more
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