Who Sells Who Index
- Oak Grigsby - USA
- Oberdorfer Pumps - USA
- Objet Geometries - Israel
- Obo - Taiwan
- Obo-Seahorn - Taiwan
- Ocean Optics BV - Netherlands
- OCS - Germany
- ODE - Italy
- Odes s.r.o. - Czech Republic
- Oditest - Germany
- ODS BV - Netherlands
- Odu Kontakt - Germany
- OEG - USA
- OEM - Italy
- Oemer spa - Italy
- Oetiker - Germany
- Ofem - Italy
- Officine Mecchaniche Gallaratesi - Italy
- Ohaus - USA
- Ohio - USA
- Ohly - Germany
- Ohmega Electronics sro - Czech Republic
- Ohmite - USA
- Ohmrite - USA
- Oil Control - Italy
- Oil Sistem - Italy
- Ojmar - Spain
- OK Industries / Jonard Ind Corp - USA
- Okartek Oy - Finland
- Okayo - Taiwan
- OKI/Rikei - USA
- Okura Yusoki Co Ltd - Japan
- OKW - Germany
- Olamef - Italy
- Oleodynamica Reggiano Spa - Italy
- Oleostar - Italy
- Oleweb - Italy
- Olflex - Germany
- Olis - Italy
- Olitec APS - Denmark
- Olivado NZ Ltd - New Zealand
- Olivetti - Italy
- Olympia - Italy
- Olympus - USA
- Omal - Italy
- Omax Corporation - USA
- Omega Lubricants - Hong Kong
- Omega Optical - USA
- Omen Diecasting - Israel
- Omerin - France
- OMG - Italy
- OMG SrL - Italy
- Omia SAS - France
- Omme Lift - Denmark
- Omnetics Connector Corp - USA
- Omnikey - Germany
- Omnipure - USA
- Omnitronic - Germany
- Omnivex - Canada
- Omnivision - USA
- Omron - ECB, IA Division - USA
- OMSO SpA - Italy
- OMT Filtri - Italy
- OMV - Italy
- On Semiconductor - USA
- On-Shore Technology - USA
- On-Trak Photonics - USA
- Ondaplast SpA - Italy
- One RF Technology - France
- OnLine Controls - USA
- Ono Sokki - Japan
- Onpress Printed Circuits Ltd - Hong Kong
- Onset Computer Corporation - USA
- Ontime - Norway
- Ooms Avenhorn Holdings bv - Netherlands
- Op-Mount Instrument Inc - Taiwan
- OPAL RT - Canada
- Opalis - Canada
- Operating Tech Inc - USA
- Ophir - Ireland
- Opneti Communications Co - China
- Optec Technology Ltd - Hong Kong
- Optek Technology - USA
- Optibase - Israel
- Optichron Inc - USA
- Opticomm Inc - USA
- Opticon - Japan
- Optigraf sagl - Switzerland
- Optilia - Sweden
- Optima Batteries - USA
- Optimem bvba - Belgium
- Optizone Technology (Shenzhen) Limited - China
- Opto 22 - USA
- Opto Diode Corporation - USA
- Opto-Control Oy - Finland
- Opto-Link Corporation - Hong Kong
- Optocon technologies s.r.o. - Slovakia
- Optoma - Sweden
- Optopolymer, GmbH - Germany
- OptoSurf GmbH - Germany
- Optosys - Germany
- Optrex - USA
- Optrex Corporation - Japan
- Optris GmbH - Germany
- Optronic Laboratories - USA
- Optus Software - USA
- OPW Fluid Transfer Group Europe BV - Netherlands
- OR-X - Israel
- Orange - Hong Kong
- Orbilan Kunststoffwerk - Germany
- Orbitec - USA
- Orbitform Group LLC - USA
- Orbotech Ltd - Israel
- Oregon Scientific - USA
- Oria Air Springs - Spain
- Oriental Hero - Taiwan
- Orion Display Technology - Korea
- orion italia - Italy
- Ormea - Italy
- Ormec - USA
- Ormed - Germany
- Ortal Diecasting - Israel
- Ortlieb - Germany
- Orved Srl - Italy
- OS Battery Ltd - China
- Oscartielle - Italy
- OSD Displays - USA
- Oshino - USA
- Oslo - USA
- OSMO - Germany
- Osram - Germany
- Osram Opto Semiconductors, Inc - USA
- Osram Silver Star Automotive Lighting - Germany
- Osram Xenon Car Bulbs - Germany
- Ossi Connectors - Denmark
- Osterrath GmbH - Germany
- OTAX - Japan
- OTECO - USA
- Otehall - Switzerland
- Otto - USA
- Otto Junker GMBH - Germany
- Otto Kurz GMBH - Germany
- Oupiin - USA
- Outland technology LLC - USA
- Oval Europe - Netherlands
- Owasys - Spain
- OWCX - Mexico
- Oxygen Electronics - USA
- OZ Optics - Canada
- Oztiryakiler - Turkey
- O¿Fallon Casting - USA
