National products manufactures a range of quality and high performance solders, fluxes and pcb chemicals used in electronics, instrumentation, automobiles, telecommunication, computer and other allied industries. National products offers hot air leveling water soluble flux. Hot air leveling flux is water soluble formulation specially formulated for use with solder coating / leveling equipment for solder coating of printed circuit board. The flux has good thermal stability and after solder coating the flux residues are completely soluble in water, thus providing pcb`s with high ionic cleanliness.