BEIJING — All 28 firms listed on China's sci-tech innovation board (STAR) reported rising revenue in the first half of this year, their financial statements showed.

China Railway Signal & Communication Corporation was the top revenue and profit earner during this period, raking in 20.512 billion yuan (about $2.87 billion) in revenue and 2.268 billion yuan in net profit.

The company saw its new contracts volume up 5.3 percent year-on-year to 34.02 billion yuan in the first six months of the year, with robust new contracts growth in railway projects.

The average revenue in the first half for the 28 firms stood at 1.177 billion yuan.

Only two firms were in the red, while three firms saw their net profit more than double in the first half of this year.

Raytron Technology, an integrated circuit chip firm, reported 64.69 million yuan in net profit during this period, surging 102.77 percent over a year ago.

The tech firm attributed its net profit expansion to a growing business, rising orders and fast sales increases of detectors and other products.

The sci-tech innovation board, which started trading on July 22, is the country's latest capital market reform and innovation move. It is designed to focus on companies in the high-tech and strategic emerging sectors, with less strict listing criteria but higher requirements for information disclosure.