BEIJING — China's producer price index (PPI), which measures costs for goods at the factory gate, went up 10.7 percent year-on-year in September, the National Bureau of Statistics said on Oct 14.

The figure went up from the 9.5 percent year-on-year increase registered in August.

The faster expansion of PPI last month was due to the price rises in coal and products of some energy-intensive industries, said senior NBS statistician Dong Lijuan.

On a monthly basis, China's PPI rose 1.2 percent in September, up 0.5 percentage points from August.

Data also showed that China's consumer price index (CPI), a main gauge of inflation, rose 0.7 percent year-on-year in September.