I need to put a label value on each geometry, so I do not need to locate the label on the (or near to) centroid.
I use QGIS 2.6 on windows 7
Most ot the records has only one geometry linked to, but I have some records with more geometry.
You have an option ate the Layer Labeling Settings > Rendering > Feature options > "Label every part of multi-part features"
Just check that option.