OptiVent Ventilation system that is aircon but without electricity use Pitch We make air conditioner that doesn’t use electricity. Quick facts 2018 ParticipantYear of participationSustainable Production SystemsThemeKazakhstanCountry Yes, I want to know more about this start-up. Name* Company* Website Email* Hiddenfinalist HiddenFinalist email PhoneThis field is for validation purposes and should be left unchanged. Connect me Team Askhat - Founder And Sales Manager, Zhandos -