Green City Solutions is a privately owned climate technology product manufacturer founded in 2014 and headquartered in Germany. The company employs 40 people and specializes in developing and producing innovative solutions to address climate change and improve urban environments. Their products include CityTrees, which are vertical gardens that help reduce air pollution and provide habitats for insects, and GreenWalls, which are modular green walls that can be installed on buildings to improve air quality and reduce energy consumption. Green City Solutions' mission is to create sustainable and livable cities by integrating nature into urban environments.