Membri MIP
Membru
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MIP Presa Scrisa
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MIP Radio
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MIP Online
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MIP OOH
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| ODS SRL | - | - | Editor web | - |
| OLX Online Services SRL | - | - | Editor web | - |
| Omnicom Media Group SRL | Agentie media | Agentie media | Agentie media | Agentie media |
| Optimus Performance Marketing SRL | - | - | - | - |
| Orange Romania Communications SA | - | - | Editor web | - |
| Orange Romania SA | - | - | - | - |
| Outsmart Media SRL | - | - | Regie de publicitate | - |