![Optimum Nutrition launches world first 3D campaign across 850 DOOH screens.](https://www.executivechannelnetwork.com/wp-content/uploads/2024/07/ECN-15-rght-side-4-800x425.png)
Optimum Nutrition launches world first 3D campaign across 850 DOOH screens.
Executive Channel Network (ECN), a world leading Digital Out of Home (DOOH) office media publisher, today announced it had launched the biggest ever 3D advertising campaign in partnership with Opti...