The services index is expected to hold nearly steady at 52.0 in December from 52.1 in November. The composite is seen at 51.0 versus 51.2. Both suggest ongoing modest expansion.

The S&P China Services PMI is based on data compiled from monthly replies to questionnaires sent to purchasing executives in over 400 private service sector companies. The panel has been carefully selected to accurately replicate the true structure of the services economy.

The S&P China Composite PMI is a weighted average of the Manufacturing Output Index and the Services Business Activity Index, and is based on original survey data collected from a representative panel of over 800 companies based in the Chinese manufacturing and service sectors.

The PMIs have developed an outstanding reputation for providing the most up-to-date possible indication of what is really happening in the private sector economy by tracking variables such as sales, employment, inventories and prices. The indexes are widely used by businesses, governments and economic analysts in financial institutions to help better understand business conditions and guide corporate and investment strategy. In particular, central banks in many countries use the data to help make interest rate decisions. PMI surveys are the first indicators of economic conditions published each month and are therefore available well ahead of comparable data produced by government bodies.