Complex sentence: On the opposite shore, in Passignano, around 10 km away, there was also an historic Italian airplane factory, the SAI Ambrosini, now abandoned as an industrial center, but still used as association center.
Split into simpler sentences: On the opposite shore, in Passignano, around 10 km away, there was an aircraft factory, the SAI Ambrosini. This is now abandoned as an industrial center, but is still used as an association center.