The HSBC purchasing manager index rose to 56.1 in December, up from 55.7 in November and the highest since the survey began in April 2004. Chinese manufacturers raised their prices at the fastest rate in 17 months. Companies said inflationary pressures came from rising raw material prices, in particular steel. The number is consistent with the offficial PMI released three days ago showing a rise to 56.6 in December.