After more than 12y in mechanical engineering, in 2019. Marko Brkljačić founded NUOTWO – smart active panels that capture CO2. While working on NUOTWO, he noticed a big gap between cleantech startups, so in 2020, he founded GBC HUB. This eco-place gathers Green/Blue/Cleantech startups (mostly hardware) to increase their possibility of success in developing ideas. In 2021, GBC HUB joined Infobip’s startup tribe as a partner, and in 2023 GBC HUB started building a bridge to connect cleantech eco-systems from the Balkan and Baltics.