Yeah the ones have dedicated mini compressors for each gun, with variable temp controls. We use dual tack tip and weld feed tips. Our rigs run us about 1200 (I think, I just used em I didn't have to buy it
). The fusion welders and wire welders are all custom made for whatever we are welding up.
We use to do a lot of wet-benches and acid tanks for Intel Fabs. We also used to do wet etch assembly line work for other companies too.