BEIJING — China's building materials sector saw generally stable production as the value-added output in June went up 4.8 percent year-on-year, official data showed.

During the January-June period, the total output of the sector shrank by 2.2 percent year-on-year, narrowing 1.9 percentage points from the drop in the first five months, according to the Ministry of Industry and Information Technology (MIIT).

In breakdown, the output of cement declined 4.8 percent year-on-year to 1 billion tons, while that of flat glass edged down 0.4 percent, basically recovering to the level recorded in the same period last year.

The sector raked in a revenue of 2.4 trillion yuan (about $343.6 billion) in the period, down 4.8 percent from a year earlier, while the profit decreased 8.2 percent to 187 billion yuan, MIIT data showed.