Listed companies in sectors including public affairs, information services, machinery and equipment, saw the biggest growth in the first half of 2013, according to their mid-term reports, the Securities Daily reported on Monday.

A total of 270 listed companies in China had disclosed mid-term reports by Monday.

Of these, 131 companies saw net profits increase year-on-year and also sequentially.

Twenty-four companies from the information service sector reported revenue of 14.31 billion yuan ($2.33 billion), up 15.12 percent year-on-year. The total net profit attributed to parent companies of these 24 companies reached 1.86 billion yuan, an increase of 28.99 percent year-on-year.

Year-on-year net profit growth rates at Avcon Information Technology, a multi-media system provider, and Enlight Media, China's leading media and entertainment group, both passed 100 percent, reaching 133.49 percent and 112.19 percent, according to their mid-term reports.