Sustainable packaging company, Opal, and international energy technology organisation, Enphase Energy, erected a wholly sustainable "life-size cardboard house" activation, via The Sphere Agency, Mumbrella can reveal. Situated as a focal point of the event's floorplan, the environmen...
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'Arguably the largest cardboard structure of its kind': Enphase Energy and Opal set up awe-inspiring activation, via The Sphere Agency