It is a degreaser from Fluxaf. It works
The fact it is a concentrate is a big plus too, in that diluted 1:10 covers general degreasing and you can obviously go up or down the dilution rates for each task. Instead of having to buy different products, buy a set of empty bottles for different rates and you are set.
KK obviously do a great job too, different approach with Original or job specific alternative bottles.