How many movies have Ali Samadi Ahadi and Andrea Mertens collaborated on?

They have worked on 3 movies together! Their first movie together was Pettson and Findus: A Little Nuisance, a Great Friendship (2014) while their highest rated movie together was Tehran Taboo (2017). They have not worked together since Tehran Taboo (2017). They are most known for their animation films together.