BEIJING — The output of China's building materials sector expanded steadily in the first eight months of this year, official data showed.

From January to August, major building materials all posted a rise in their output. The output of cement and flat glass registered a year-on-year growth of 7 percent and 5.2 percent, respectively, according to the National Development and Reform Commission.

The output of cement increased by 5.1 percent year-on-year in August, while flat glass also rose 5.1 percent.

The data came as the property sector, a major consumer of cement and flat glass, saw growing investment in the first eight months.

China's investment in property development grew 10.5 percent year-on-year in the Jan-Aug period, official data showed.