BEIJING -- China's industrial value-added output rose 13.8 percent year-on-year in September, faster than the 13.5 percent annual growth registered in August, the National Bureau of Statistics (NBS) said Tuesday.

On a monthly basis, the output in September increased 1.2 percent from that of the previous month, NBS Spokesman Sheng Laiyun said at a press conference.

Industrial value-added output measures the final output value of industrial production, or the value of gross industrial output minus intermediate input, such as raw materials and labor costs.

Sheng said there was great chance that China's economy would maintain its stable and relatively fast growth in the coming period, boosted by a strong growth momentum.

He noted that industrial enterprises' profits continued the upward trend in the first eight months with a year-on-year growth of 28.2 percent.

In the first three quarters of this year, industrial value-added output increased 14.2 percent year-on-year, down 0.1 percentage point from the growth in the first half of this year, Sheng said.

During the same period, the industrial value-added output of state-owned and state-held companies grew 10.4 percent year-on-year, while that of collectively-owned and joint-stock enterprises expanded by 9.6 percent and 16.1 percent, respectively.

Industrial value-added output for the heavy industry sector rose 14.6 percent from one year earlier, while that of the light industry sector climbed 13.1 percent.