The 17th edition of the China Cross-Straits Technology and Projects Fair opens in Fuzhou, capital city of East China's Fujian province on June 18. [Photo/Xinhua]

A total of 849 deals worth 33.9 billion yuan ($5 billion) were reached at the 17th China Cross-Straits Technology and Projects Fair in Fuzhou, capital city of East China's Fujian province, official data show.

Both the investment value and number of deals posted increases over last year.

The deals were primarily focused on digital economy. There were 29 deals with investment value exceeding 100 million yuan, accounting for 75 percent of the total.

The four-day event,with attendance of more than 1,200 companies from both sides of the Taiwan Straits, encompasses three exhibition zones, occupying 80,000 square meters, with 390 booths.

Public technology platform products from Fuzhou were popular this year, which includes China’s first platform for industrial Internet and identity resolution applications, Fujian's artificial intelligence public service platform, and an offshore wind power intelligence operations platform.

The fair, which was first held in 2003, has developed to into an important annual event for deepening cooperation and exchange between businesses from the mainland and Taiwan.

Official data show that Fuzhou is home to more than 3,000 software enterprises, 230 big data enterprises and over 150 enterprises specializing in Internet of Things, all of which have become a significant part of the city's annual tech fair.