O.G. KELLEY & COMPANY, INC. OKL Engineering Inc Omnicell, Inc. Olympic Wear Ogle Specialty Broaching Co Omni-Tech Sales Odie Sheet Metal Orca Manufacturing Omega Piezo Technologies Inc. OML, Inc. OptiMA Dry Erase Products Oak Security Group Ottawa Manufacturing Corporation Oregon Door OmniMount OEP Machining Optics 1 Opti Temp, Inc. Ohio Tool Works Optimum Window Mfg Corp OmniMax Ocean Aero Inc Operating & Maintenance Spec Old Hickory Bar B-Q Machines, Inc. Overton Chicago Gear OneCharge Lithium Batteries Olympus IMS Owens Machine & Tool Co. OR Tool Works Orttech, Inc. Olds Elevator, LLC OAKVILLE QUALITY PRODUCTS, LLC Olesnevich Fabricating & Truck Repair Opticon North America (Opticon, Inc.) Ohio Metallurgical Service, Inc. Olmar Supply O'Brien Wire Products Oregon Precision Manufacturing Inc. O & S PRECISION, INC. Oasis Precision Oil Pure Technologies Osage Ambulances OAK STREET TANK & STEEL INC. Octa Inc. - Tubular Products Oregon Rule Company Oil-Rite Corporation OAKLAND MACHINE WORKS, INC Olde World Cast Stone Omi OSI Tough

ORANGE COUNTY NAMEPLATE CO., INC Ohio-Kentucky Steel ORC PRODUCTS, INC. Omega Precision Tool Corporation Ohio Paper Tube Co Olson Fabrication, Inc. ORLANDO METAL FABRICATION, INC Omniseal Solutions OLIVIA MACHINE SHOP INC Osborn Manufacturing Corp Owens Corning FOAMGLAS Industrial Insulation OffGrid Omni Lift Inc Oeser Co Overbuilt Inc Orion RED Oven Industries Inc. Oceco, Inc Olson & Co. Steel, Inc. Oskaloosa Engineering & Manufacturing Oaks Welding Inc Oliver Steel Plate Company Oberdorfer Pumps Ocumetrics Inc OMNIVISION Ott Welding Ocean Presence Technologies OSD Displays (A Division of New Vision Display) Onshore Technologies, Inc. Oliver Rubber Co Otto's Welding & Machine Shop Inc OSI Electronics Optimum Metrology LLC Ozonology Inc Obermeyer Hydro, Inc. OMICRON SENSING INC O & S Tool OSI Laser Diode Inc Odyssey Manufacturing Co. OGI Process Equipment OLSEN FABRICATING INC Old Dominion Tractor & Eqp Co On Demand Machinery Oakland Products Otterbine Barebo Inc Omni Machine Works Ohare Spring Company Omni Lite Industries Ohio Valley Specialty Chemical O-Flex Group, Inc.

Orthomerica Products, Inc. Optics Technology, Inc. Outdoor Venture Corporation Omnicare, a CVS Health company Optima Technology Associates, Inc. Owings Patterns OPC POLYMERS Obtura Spartan Ohio Coatings Company Ocutech Inc Osborne Transformer Corporation O'Malley Valve Co. Oakley Industries, Inc. Oorja Fuel Cells Odell Electronics OnBoard Circuits, Inc. Ozark Integrated Circuits, Inc. OmniPreSense Corporation Orbex Group OLD SOUTH FABRICATORS Omega Automation Ohio Harness, LLC Opticonx Ocean Breeze Mfd. by Quorum Marine & Electronics, Inc. OEM Tube Assemblies Omni Technologies, Inc. Optimum Precision, Inc Oregon Freeze Dry Omicron Engineering Inc Ostrem Tool Co Omega Electronic Instrument Optical Support, Inc. Ogontz Corporation Orange Research Oro Manufacturing Company Overlook Industries, Inc Optimum Spring Manufacturing / Spring Experts in Corrosive and Extreme Temperature Environments Opel Automotive Engineering Orange County Thermal Industries, Inc. OEM Controls Ometek Inc Oxford General Industries Inc Ok Foundries Co Inc On Target Grinding and Mfg Olympic Instruments Inc OZ Lifting Products LLC Odin Fabrication Inc OLIN ENGINEERING, INC. Orion Engineered Seals O & D MANUFACTURING, INC.