Who are the top 5 leading Italian Manufacturers .? (Milan)

Hi Everyone,

I recently moved to live in Milan and looking to work as outsource consultant therefore I would like to know the top 5 leading companies ( Italian Manufacturers) from each industry Automotive, Defence, Aerospace, Security, Access Control, Telecom products/Electronics, IP/Networks solutions, Biometrics,Wired Communication and Industrial Equipment.

Any tips / leads will be warmly welcome ;-)

Thank you so much