  In this, the third of a series of papers, we present well determined chemical
abundances for 124 Planetary nebulae (PNe) in the Galactic bulge from deep,
long-slit FORS2 spectra from the 8.2 m ESO Very Large telescope (VLT). Prior to
this work there were only ~240 bulge PNe with chemical abundances previously
determined over a ~50 year period and of highly variable quality. For 34 of
these PNe we are presenting their abundances for the first time which adds ~14%
to the available sample of bulge PNe abundances. The interstellar reddening,
physical conditions (electron densities, $n_{\mathrm{e}}$, temperatures,
$T_{\mathrm{e}}$), and chemical compositions are derived as single values for
each PN but also using different line diagnostics. Selected comparisons with
the best literature fluxes for 75 PNe in common reveals that these significant
new data are robust, reliable and internally self-consistent forming the
largest independent, high quality and well understood derivation of PNe
abundances currently available for study.
