In Piacenza there are more than 30,000 companies, 106 production units per 1000 inhabitants.

16,000 in the service sector generate € 5,200 mil added value
3,000 in the manufacturing sector generate € 1,800 mil
5,100 in the construction sector generate € 470 mil added value
5,400 in the agricultural sector generate € 410 mil.






Source
Infocamere (the 1st January 2015)