Catalyst Connection
Find manufacturersAdd your company
Catalyst Connection

Copyright 2026 Catalyst Connection

All rights reserved

Directory

  • All manufacturers
  • Maryland manufacturers
  • New York manufacturers
  • Ohio manufacturers
  • Pennsylvania manufacturers
  • West Virginia manufacturers

Company

  • About us
  • Blog
  • Contact us

Support

  • Terms of service
  • Privacy policy

Stay up to date

Get regional manufacturing news, events, and resources from Catalyst Connection.

Subscribe to the newsletter

Find manufacturers

Use company names, capabilities, certifications, NAICS codes, and location filters to narrow qualified suppliers faster.

Search

Search by company name, process, material, product, equipment, or capability.

Search results

Showing 3541-3560 of 9132 results

OH

Growscape logo

Growscape

TWINSBURG, OH
501-1,000
View profile

Born from the merger of The HC Companies and Classic Home & Garden, Growscape makes horticultural containers for commercial growers, nurseries, retailers and home gardeners. Its portfolio combines production-ready pots with decorative garden containers, including sustainable fiber products and designs built for automated handling. The company also operates a roughly 1.2-million-square-foot manufacturing and distribution campus in Middlefield, Ohio, and reports that its plastic containers average more than 50% recycled content.

Horticultural ContainersPlantersPots+51 more
GRT Utilicorp, Inc logo

GRT Utilicorp, Inc

WOOSTER, OH
2-10
View profile

Family-owned GRT Utilicorp manufactures post-driving and drilling equipment, including post drivers and pressure diggers, from its full-service operation in Wooster, Ohio. The company brings 50 years of experience to repairing and rebuilding Sterling machines and other makes, while also supplying replacement parts and used equipment.

Post driving equipmentDrilling equipmentLarge track post drivers+22 more
Grumpy Bear Campers logo

Grumpy Bear Campers

UNIONTOWN, OH
2-10
View profile

From its Ohio shop, Grumpy Bear Campers hand-builds lightweight fiberglass truck campers for off-grid travel, including custom rigs designed around a customer’s truck and camping style. Its molded composite construction replaces wood framing, helping prevent rot and moisture damage while keeping campers light enough for mid-size trucks and remote terrain. The company sells the Overland Cub and Arctos S1 alongside fully custom builds, with customers working directly with the people building their camper.

Truck CampersOverland CubArctos S1+22 more
GRYB International logo

GRYB International

ALLIANCE, OH
501-1,000
View profile

Launched in 2007, GRYB International is a group of companies that manufactures heavy-equipment attachments and related solutions for industries including construction, material handling, forestry and mining. From five manufacturing locations, its portfolio brings together specialized brands serving customers in more than 20 countries, with more than 400 employees across the group.

Heavy Equipment AttachmentsHydraulic AttachmentsForestry Loaders+20 more
Grypmat logo

Grypmat

CELINA, OH
2-10
View profile

After watching his tools slide off aircraft while working as an aircraft mechanic, veteran and inventor Tom Burden spent three years prototyping the Grypmat in his basement and turned the idea into a flexible, non-slip tool mat for professional and DIY mechanics. The Celina, Ohio company’s signature mat is made from food-grade silicone, withstands heat up to 500°F, and gives tools a stable home on a work surface. Grypmat later gained national attention when Burden secured a deal on Shark Tank.

Flexible Non-Slip Tool MatsFood-Grade Silicone Tool MatsSmall Tool Mat+17 more
GS Steel Company logo

GS Steel Company

CUYAHOGA FALLS, OH
View profile

GS Steel Company is a metal fabrication and machining company in Cuyahoga Falls, Ohio, operating from a 33,000-square-foot facility. Don and Beth Potoczek purchased the company in 2005, building on employees’ expertise in high-definition plasma cutting. The company describes more than 30 years of experience and serves customers with custom fabrication and precision machining.

Custom Fabricated Metal PartsCarbon Steel PlateAluminum Plate+33 more
GSH Industries logo

GSH Industries

STRONGSVILLE, OH
11-50
View profile

Since 1986, GSH Industries has remained a third-generation family business in Ohio, known for keeping custom manufacturing work in-house. It serves OEM customers across North America with made-to-spec plastic components, supported by 15 injection molding machines and more than 150 years of combined industry experience.

Custom Plastic ExtrusionsCustom Plastic PartsInjection-Molded Parts+45 more
GSW Manufacturing logo

GSW Manufacturing

FINDLAY, OH
1,001-5,000
View profile

Since opening its Findlay operation in 1989, GSW Manufacturing has designed and built wire harnesses for vehicles, industrial equipment and specialty products. The Ohio company works with G.S. ELECTECH in Japan, giving its engineers access to additional design and testing resources while supporting automotive customers as a Tier 1 and Tier 2 supplier. GSW’s Ohio operation holds IATF 16949, ISO 9001:2015 and ISO 14001:2015 certifications.

Wire HarnessesAC Wire HarnessOxygen Sensor+38 more
GT Technologies logo

GT Technologies

TOLEDO, OH
501-1,000
View profile

Since 1975, GT Technologies has designed and manufactured high-precision valvetrain systems, machined components and stamped assemblies for performance-critical engine applications. The company is known for creating stamped roller finger followers that have become standard across the industry, and its Westland Technical Center supports product design, analysis, prototyping and testing with a team of 25 engineers. GT Technologies operates five U.S. locations with more than 500 employees and holds ISO 9001:2015, ISO 14001:2015 and IATF 16949:2016 certifications across its facilities.

Valvetrain SystemsValvetrain ComponentsValvetrain Actuation Assemblies+62 more
Guardian Energy logo

Guardian Energy

LIMA, OH
11-50
View profile

Born in 2009 from a group of farmer-owned ethanol cooperatives, Guardian Energy turns locally grown Midwest corn into renewable fuel and useful animal-feed co-products. The company operates three production plants in Janesville and Lima, plus Hankinson, under a management team based in Prior Lake, and processes about 50 million bushels of corn each year. Its dry-mill operation also recovers corn oil and produces low-carbon-intensity ethanol from corn fiber.

EthanolCorn-Starch-Based EthanolCorn-Kernel-Fiber Ethanol+22 more
Guardian Medical USA, Inc logo

Guardian Medical USA, Inc

SWANTON, OH
11-50
View profile

Guardian Medical USA is an Ohio-based contract manufacturer of sterile barrier packaging for medical devices, built around its CapSure™ system for protecting orthopedic implants. Founded by entrepreneurs with backgrounds in plastics, injection molding, orthopedic surgery and sterile packaging, the company designs, manufactures and services custom packaging in clean-room facilities. CapSure is pre-validated with a 10-year shelf life and uses a minimal-footprint design intended to simplify packaging while reducing sterilization, shipping and storage demands.

Sterile Barrier PackagingCapSure Packaging SystemCapSure Tube Kit+37 more
Guggisberg Cheese, Inc logo

Guggisberg Cheese, Inc

MILLERSBURG, OH
51-200
View profile

Founded in Ohio’s Amish Country in 1950 by Swiss immigrant Alfred Guggisberg, Guggisberg Cheese makes Swiss cheese and is best known as the creator of Original Baby Swiss. Alfred developed the milder, creamier style after experimenting with local milk, and his son Richard now leads the company. The cheese maker has grown into one of the largest Swiss cheese manufacturers in the United States, with national and international recognition including U.S. Grand Champion honors in 2015 and 2019.

Swiss CheeseOriginal Baby Swiss CheesePremium Swiss Cheese+33 more
Guggisberg Swiss Inn logo

Guggisberg Swiss Inn

CHARM, OH
2-10
View profile

Founded in 1993 by Eric and Julia Guggisberg, Guggisberg Swiss Inn is a family-owned-and-operated 23-room country inn overlooking Holmes County’s Doughty Valley in Ohio’s Amish Country. Guests can pair a hot breakfast and quiet rural setting with on-site wine tasting, seasonal guided horseback rides, and horses roaming the grounds. The inn’s family story also reaches back to Eric’s father, Alfred Guggisberg, who created Baby Swiss cheese.

Estate WinePinot NoirGewürztraminer+19 more
GuidedSMILE, LLC logo

GuidedSMILE, LLC

INDEPENDENCE, OH
View profile

GuidedSMILE, LLC develops and supplies guided surgical systems and dental devices for full-arch implant procedures. Its CHROME GuidedSMILE workflow coordinates surgical guides, bone reduction, implant placement, and provisional prosthetics, with products including metal and plastic guide options. The company supports dental practices and partner laboratories with surgical planning and lab education.

Guided Dental Surgical GuidesCHROME GuidedSMILE StandardGuidedSMILE Natural+32 more
Guild Associates, Inc logo

Guild Associates, Inc

DUBLIN, OH
View profile

Guild Associates is a Dublin, Ohio engineering and manufacturing company known for taking difficult technical problems from research through delivered systems. Its work serves commercial and military customers, with a particular history in chemical and biological defense and gas processing; the company’s gas-processing background dates to 2001, and its longest-running plant has operated since 2004. Guild operates an 11-acre laboratory and production complex in Dublin alongside a separate Delaware, Ohio media-production facility, and is ISO 9001:2015 certified.

Gas Processing SystemsBiogas Upgrading SystemsLandfill Gas Upgrading Systems+63 more
Guild International, Inc logo

Guild International, Inc

BEDFORD, OH
11-50
View profile

Since 1958, Guild International has been a Bedford manufacturer known for coil-joining machinery used in steel, tube, and stamping operations. Its equipment has been installed in 27 countries, and the company supports customers with engineering assistance and ongoing machine service.

Coil End WeldersLaser WeldersArc Welders+52 more
Guild Outfitters logo

Guild Outfitters

LEXINGTON, OH
2-10
View profile

Guild Outfitters is an Ohio-based vehicle-outfitting company best known for turning a limited factory switch location into a modular control space for third-generation Toyota Tacoma owners. It now serves overland and off-road enthusiasts with vehicle-specific upgrade gear, including factory-style switch panels and interior electrical upgrades.

Vehicle Switch PanelsModular Switch InsertsAutomotive Switches+36 more
Gullco International, Inc logo

Gullco International, Inc

MACEDONIA, OH
View profile

With more than seven decades of experience, Gullco International is known for North American-made equipment that helps industrial fabricators automate welding work. Most manufacturing is performed in-house, with more than $12 million invested in CNC equipment to support the ruggedness and precision of its systems. The company serves customers worldwide, including demanding heavy-fabrication operations.

Welding and Cutting Automation CarriagesWeld Oscillation Automation CarriagesWeld Gouging Automation Carriages+34 more
Guy Chemical logo

Guy Chemical

WESTERVILLE, OH
View profile

Guy Chemical manufactures silicone sealants and epoxy adhesives and is now part of Matrix Adhesives Group. Its work includes chemical formulation and compounding, with toll manufacturing and packaging services for brands serving automotive, industrial, construction, and consumer markets.

Silicone SealantsEpoxy AdhesivesManufacturing silicone sealants+16 more
Guyer Precision Manufacturing logo

Guyer Precision Manufacturing

PAINESVILLE, OH
11-50
View profile

In Painesville, Guyer Precision Manufacturing makes tight-tolerance components through custom CNC Swiss and precision machining, including complex small-diameter parts for demanding applications. The contract manufacturer supports work ranging from prototypes to production runs exceeding one million pieces and handles finishing services under one roof. Its quality management system is certified to AS9100D and ISO 9001:2015, with ITAR registration and JCP certification supporting aerospace and defense work.

Precision PartsTight-Tolerance PartsSmall-Diameter Precision Parts+45 more
Loading map...
  • 1
  • ...More pages
  • 177
  • 178
  • 179
  • ...More pages
  • 457