China has already spent well over 5 billion euros buying stakes in some of Italy's biggest companies this year.
At a news conference with Chinese Premier Li Keqiang in Rome, Italian Prime Minister Matteo Renzi said the deals were no more than an "antipasto" and should open the way to further accords with China in the future.
"We must bring more China to Italy and take more Italy to China," he said.
Li, who will be attending the ASEM meeting of Asian and European leaders in Milan on Thursday and Friday, said China wished to strengthen cooperation with small and medium-sized firms and would encourage more Chinese tourists to visit Italy.
With Italy's economy now back in recession for the third time since 2008 and foreign investors wary of the country's notorious red tape and unpredictable legal system, Renzi's government has been keen to woo cash-rich buyers from China.
The deals in Italy follow a series of business accords Li signed during a visit to Berlin last week.
Italian state lender CDP said it had signed an accord with China Development Bank (CDB) for cooperation projects worth up to 3 billion euros over the first five years of the deal.
It gave no details but said the projects could be in infrastructure, direct equity investments or export financing. An Italian source said CDB would put up more than half of the total financial resources made available for joint investments.
In addition, Italian state investment fund FSI said it had signed a memorandum of understanding with China Investment Corp, a sovereign wealth fund responsible for managing part of China's foreign exchange reserves, for joint investment projects in which each would provide up to 500 million euros.
Among other deals, aerospace group Finmeccanica announced a 400 million euro contract to supply 50 helicopters, while electricity group Enel (>> Enel S.p.A.) signed a memorandum of understanding with Bank of China potentially making available up to 1 billion euros of financing over the next five years.
As well as being a big buyer of Italian government bonds, China's central bank has made a series of significant investments in blue- chip Italian companies this year. They include stakes of about 2 percent in Italy's biggest carmaker Fiat (>> Fiat SpA), top domestic telecoms operator Telecom Italia (>> Telecom Italia SpA) and world No. 1 cable maker Prysmian (>> Prysmian SpA).
In March, the central bank bought similar stakes in leading oil and gas operator Eni (>> Eni SpA) -- an investment worth 1.3 billion euros -- and in utility Enel.
In addition, China's State Grid bought a 35-percent stake in energy grid holding company CDP Reti for 2.1 billion euros and Shanghai Electric Group took a 40 percent stake in power engineering company Ansaldo Energia from Italian state fund FSI in a deal worth 400 million euros.
(Additional reporting by Oleg Vukmanovic, James Mackenzie and Luca Trogni; Writing by James Mackenzie; Editing by Louise Ireland)
By Francesca Landini and Steve Scherer