these are the sounds found in most native Mandarin dialects:
there are also sounds not on the chart

Other sounds:
a labio-velar central approximant [w]
all stops and affricates have aspirated counterparts
vowels occur in four contrastive tones

(from: Maddieson, I. 1984. Patterns of Sounds. Cambridge: Cambridge University Press.
Lyovin, Anatole. 1997. An Introduction to the Languages of the World. NY: Oxford University Press.)