Firms listed on the Shenzhen Stock Exchange saw their total revenue up 23.46 percent year on year in 2017, the stock exchange said Tuesday.

Total profits for the 2,105 Shenzhen-listed firms that have disclosed their 2017 financial performance reached 729.5 billion yuan (115.2 billion U.S. dollars), up 20.58 percent year on year.

Among them, firms listed on the Nasdaq-style ChiNext board posted the highest average gross profit rate of 29 percent, indicating strong competitiveness of high-tech firms.

The high-tech and strategic emerging sectors accounted for 70 percent and 40 percent of the Shenzhen-listed firms, respectively, as of the end of April.