ISOLA is an integrated painting system consisting of a trolley conveyor, painting booths, drying tunnel, robots for automatic painting and areas for loading and unloading pieces. In some specific points along the line, the trolleys can accumulate in order to store many pieces in a narrow place, helping the drying process. The trolleys have a rotating platform and are equipped with an exclusive self-centering device. Upon request, an automatic piece rotating device interfaced with the spraying robot is available. In the automatic painting version, ISOLA is equipped with one or more self-learning robots.