BEIJING, Feb. 10 -- The fall in China's producer prices widened in January, indicating slowing economic activity further hit domestic demand, official data showed on Tuesday.

Producer price index (PPI), which measures inflation at wholesale level, slumped 4.3 percent year on year in January, and the decline deepened from December's 3.3 percent fall, the National Bureau of Statistics said.

Tumbling oil and other commodity prices have extended the run of producer-price declines to a record 35 months.

On a monthly basis, PPI dropped 1.1 percent from the previous month.