The Penntyte spark gives +3% hdt mining yield, the DFI gives +3% immentium and the Seiguchi spark gives +3% stermonit.

Now with the changes I think Penntyte spark should give bonus to Silgium, as it is the faction ore for pelistals. Immentium for DFI(nuimqol) and stermonit for Seiguchi(thelodica)