OLI is the largest producer of cisterns in Southern Europe. OLI was founded in 1954 as a small family business in Aveiro, and started producing cisterns in 1980. Today, its innovative solutions are present in 70 countries on 5 continents.
Using patented technology, OLI is recognized for constantly studying new and better solutions that increase water efficiency and accessibility. Innovation is in its DNA - OLI has 41 active patents in Europe and is the Portuguese company with the most patents in Europe.