Complex sentence: The aircraft is produced by a joint venture, Airmak S.r.l., between Rafaelle Violetti and Valter Proietti of OMA Sud and is manufactured at OMA Sud's Italian facility.
Split into simpler sentences: The aircraft is produced by Airmak S.r.l., a joint venture between Rafaelle Violetti and Valter Proietti of OMA Sud. It is manufactured at OMA Sud's Italian facility.