BEIJING — China's producer price index (PPI), which measures costs for goods at the factory gate, went up 12.9 percent year-on-year in November, data from the National Bureau of Statistics (NBS) showed on Dec 9.

The figure shrunk from the 13.5 percent year-on-year increase registered in October.

The slower expansion of PPI last month was due to the implementation of policies to ensure supply and stabilize prices of energy and raw materials including coal and metal, said senior NBS statistician Dong Lijuan.

On a monthly basis, China's PPI remained stable compared with that in October.

The data on Dec 9 also showed that China's consumer price index, a main gauge of inflation, rose 2.3 percent year-on-year in November.